Epidemiology and Health

Systematic Review

Socioeconomic factors affecting breast and cervical cancer screening compliance in Asian National Cancer Centers Alliance countries: a systematic review: Seowoo Bae, Ye Ji Kang, Jeonghoon Ahn, Bo-Hyoung Jang, Kui Son Choi, Hyeon Ji Lee, Mina Suh; Epidemiol Health. 2025;47:e2025050. Published online August 28, 2025; DOI: https://doi.org/10.4178/epih.e2025050

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Abstract

Breast and cervical cancers are the most frequently diagnosed cancers in women. The Asian National Cancer Centers Alliance (ANCCA) has strengthened cancer control efforts in the Asia region; however, only a few countries have achieved sufficient participation rates. This systematic review aimed to synthesize the existing evidence on socioeconomic factors influencing women’s compliance with breast and cervical cancer screening in ANCCA countries. This study was conducted as a systematic review, with studies collected from PubMed, Cochrane Library, Scopus, and Embase. All included studies employed cross-sectional designs to identify socioeconomic factors affecting compliance with breast or cervical cancer screening. Study selection, quality assessment, and data extraction were carried out by 2 independent reviewers with cross-checking. In total, 48 studies were reviewed. Education level and family history were associated with participation in breast cancer screening, while education level, household income, marital status, and medical insurance were linked with cervical cancer screening. When stratified by Human Development Index (HDI) level or by the presence of a National Cancer Screening Program, differences were observed in the factors influencing screening compliance. Nevertheless, higher education consistently correlated with higher screening rates for both cancer types, regardless of HDI level. This systematic review identified multiple socioeconomic factors that shape breast and cervical cancer screening compliance in Asian countries. To reduce disparities in participation, tailored multi-strategy approaches adapted to each country’s specific context are required. These findings may provide useful evidence for future research and policy initiatives aimed at addressing health equity issues.

Summary

Korean summary
여성의 유방암 및 자궁경부암 검진 참여는 다양한 사회경제적 요인의 영향을 받는다. 두 암 모두에서 교육 수준이 높을수록 검진 참여율이 높았으며, 기타 요인들은 암 종류에 따라 달랐다. 검진 참여 격차를 줄이고 건강 형평성을 향상시키기 위해서는 각 국가의 특성을 반영한 다차원적 맞춤형 전략이 필요하다.

Key Message
Breast and cervical cancer screening compliance among women is influenced by various socioeconomic factors. Higher education consistently increased screening participation for both cancers, whereas other factors differed by cancer type. To reduce disparities and promote health equity, multi-strategy approaches tailored to each country’s specific context are required.

Citations

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Patient-Clinician Communication: ASCO Guideline Update
Timothy Gilligan, Kari Bohlke, Ash B. Alpert, Nessa Coyle, Seema Harichand-Herdt, Christopher S. Lathan, Evangelia Razis, Kimberly Rivera, Tara Sanft, Carole Seigel, Melissa Times, Calvin L. Chou
Journal of Clinical Oncology.2026; 44(11): 1040. CrossRef

Original Article

Socioeconomic inequality in organized and opportunistic screening for breast cancer: results from the Korean National Cancer Screening Survey, 2009-2021: Yejin Ha, Xuan Quy Luu, Woorim Kim, Jae Kwan Jun, Mina Suh, Kui Son Choi; Epidemiol Health. 2025;47:e2025031. Published online May 30, 2025; DOI: https://doi.org/10.4178/epih.e2025031

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Abstract Summary PDF Supplementary Material: Abstract
OBJECTIVES
Breast cancer screening rates have increased since the introduction of the National Cancer Screening Program (NCSP) in Korea. However, it remains unclear whether socioeconomic inequalities have improved, particularly according to screening type. This study investigated inequalities in organized (government-led) and opportunistic (individually initiated) screening, stratified by education and income levels.
METHODS
Data were obtained from the Korean National Cancer Screening Survey, conducted annually from 2009 to 2021, involving approximately 1,700 women each year except in 2009. Trends were analyzed using joinpoint regression to calculate average annual percent changes (AAPCs). Socioeconomic inequalities were assessed using the slope index of inequality (SII) and relative index of inequality (RII).
RESULTS
Organized screening rates increased from 42.0% in 2009 to 60.2% in 2021 (AAPC, 1.9; 95% confidence interval [CI], 0.7 to 3.4), whereas opportunistic screening rates declined from 13.3% to 11.2% (AAPC, -5.4; 95% CI, -8.7 to -2.3). For organized screening, individuals with lower education levels exhibited higher participation, resulting in negative inequality indices (SII, -5.37%; RII, 0.80). No significant income-based inequality was found (SII, 1.60%; RII, 1.07). However, opportunistic screening demonstrated significant inequalities by both education (SII, 5.37%; RII, 1.92) and income (SII, 5.90%; RII, 1.96), with higher participation rates among more advantaged groups.
CONCLUSIONS
The NCSP has improved breast cancer screening rates and reduced income-related inequality in organized screening. However, educational and income-based inequalities persist in opportunistic screening. To reduce screening inequities, policy efforts are needed to further promote the NCSP, including improving program quality and providing financial support for follow-up examinations.; Summary

Korean summary
본 연구는 한국의 유방암 검진에서 검진 유형에 따른 사회경제적 불평등을 분석하였다. 국가 검진에서는 전체 수검률이 증가하고 소득 관련 불평등이 감소한 반면 개인 검진에서는 사회경제적 불평등이 여전히 존재하였다. 유방암 검진의 불평등을 줄이기 위해 지속적이고 집중적인 정책 노력이 필요하다.

Key Message
This study examined socioeconomic inequality in breast cancer screening in Korea by screening type. While organized screening has improved overall participation and reduced income-related inequality, socioeconomic inequalities remain in opportunistic screening. Continued and targeted policy efforts for the NCSP are necessary to further reduce inequality in breast cancer screening.

Special Article

The Korean National Codes Against Cancer: background of their establishment and the revision process: Yoonjoo Choi, Jin-Kyoung Oh, Ayoung Byeon, Byungmi Kim; Epidemiol Health. 2025;47:e2025027. Published online May 14, 2025; DOI: https://doi.org/10.4178/epih.e2025027

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The Korean National Codes Against Cancer provide guidelines for cancer prevention. The inaugural edition was published in 2006, followed by a major revision in 2016. This study aimed to describe the historical context, scientific rationale, and revision process of these guidelines. With rising cancer incidence in the early 2000s, the Korean government recognized the need for national cancer prevention guidelines, prompting the National Cancer Center to initiate their formulation. The Division of Cancer Prevention reviewed global literature on cancer trends and Korea-specific studies on cancer risk factors. The final set of 10 recommendations comprising the Korean National Codes Against Cancer was approved by the National Cancer Control Committee after achieving expert consensus on cancer prevention. The finalized guidelines are firmly grounded in scientific evidence. The 10 current recommendations include: (1) no smoking and avoidance of secondhand smoke; (2) consuming sufficient fruits and vegetables as part of a balanced diet; (3) reducing salt intake and avoiding burnt or charred foods; (4) limiting alcohol consumption; (5) engaging in regular physical activity (at least 30 minutes a day, 5 days a week); (6) maintaining a healthy body weight; (7) receiving immunization against hepatitis B virus and human papillomavirus; (8) practicing safe sex by maintaining a single sexual partner and using condoms; (9) following health and safety guidelines to avoid exposure to occupational carcinogens; and (10) undergoing regular cancer screening. This study detailed the sources and procedures involved in formulating and revising the Korean National Codes Against Cancer.; Summary

Korean summary
한국의 대국민 암예방수칙은 암예방에 대한 권고사항을 담고 있습니다. 이것은 2006년에 제정 및 공표되었고 이후 누적된 연구결과와 사회적 변화를 반영하여 2016년에 1차 개정이 이루어졌습니다. 국립암센터 암예방사업부 연구진과 영역별 자문단은 과학적 근거에 기반한 암예방수칙 제정과 개정을 위해 관련 연구를 검토하고 의견 수렴, 합의의 과정을 거쳤습니다. 최종적으로 암관리위원회 승인을 받아 현재의 10개 항목 암예방수칙이 되었습니다.

Key Message
The Korean Code Against Cancer comprises a set of recommendations intended to prevent cancer. These guidelines were initially established and published in 2006 and subsequently revised in 2016 to incorporate accumulated research findings and evolving societal factors. The Secretariat of the Division of Cancer Prevention at the National Cancer Center, in collaboration with expert working groups from various fields, systematically reviewed relevant studies, gathered opinions, and reached consensus to ensure that the guidelines were evidence-based. The National Cancer Control Committee approved the currently published 10 codes for cancer prevention.

Original Articles

Adherence to the Korean National Code Against Cancer and mortality: a prospective cohort study from the Health Examinees-Gem study: Jeeyoo Lee, Aesun Shin, Woo-Kyoung Shin, Ji-Yeob Choi, Daehee Kang; Epidemiol Health. 2025;47:e2025026. Published online May 9, 2025; DOI: https://doi.org/10.4178/epih.e2025026

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OBJECTIVES
The Korean National Code Against Cancer was released in 2006. These guidelines aimed to promote a healthy lifestyle to prevent cancer risk through 10 recommendations. The objective of this study was to investigate the associations between adherence to the Korean National Code Against Cancer and the risk of all-cause, cancer, and cardiovascular disease (CVD) mortality among Koreans.
METHODS
This prospective cohort study included 109,160 Korean adults aged 40 years to 69 years, recruited from 2004 to 2013 in the population-based Health Examinees-Gem Study. The adherence total score was calculated based on 6 items from the Korean National Code Against Cancer: smoking, consuming vegetables and fruits, limiting salty foods, restricting alcohol intake, engaging in physical activity, and maintaining a healthy weight. Hazard ratios (HRs) and 95% confidence intervals (CIs) for the associations of adherence scores with mortality risk were estimated using a Cox proportional hazards regression model.
RESULTS
During a mean follow-up period of 12.0 years, 3,799 deaths were recorded. According to the multivariable-adjusted model, males in the highest tertile of adherence scores had a lower risk of all-cause, cancer, and CVD mortality compared to those in the lowest tertile (all-cause: HR, 0.67; 95% CI, 0.60 to 0.74; cancer: HR, 0.63; 95% CI, 0.54 to 0.74; CVD: HR, 0.56, 95% CI, 0.43 to 0.73). A similar association was observed among females for all-cause and CVD mortality (all-cause: HR, 0.85; 95% CI, 0.76 to 0.96; CVD: HR, 0.70; 95% CI, 0.51 to 0.97).
CONCLUSIONS
Adherence to the Korean National Code Against Cancer was associated with a reduced risk of all-cause, cancer, and CVD mortality.; Summary

Korean summary
한국인 대규모 집단에서 암예방 수칙 준수도가 높을수록 전체 사망, 암 사망, 심혈관질환 사망 위험이 감소함을 확인하였으며, 암예방수칙의 보급과 준수가 암뿐만 아니라 다른 만성질환으로 인한 사망을 예방하는 데 중요함을 시사한다.

Key Message
We found that greater adherence to the Korean National Code Against Cancer was associated with reduced risks of all-cause, cancer, and cardiovascular disease mortality in a large Korean population, highlighting the importance of promoting this code for public health.

Association of dietary inflammatory index with mortality risk: a prospective analysis of the Korea National Health and Nutrition Examination Survey: Dahyun Park, Hee Ju Jun, Garam Jo, Soyoung Kwak, Min-Jeong Shin; Epidemiol Health. 2025;47:e2025017. Published online April 9, 2025; DOI: https://doi.org/10.4178/epih.e2025017

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Abstract

OBJECTIVES
The energy-adjusted dietary inflammatory index (E-DII), a tool developed based on comprehensive research and literature reviews, is used to assess the inflammatory potential of specific diets. Although previous research has demonstrated an association between E-DII and mortality, longitudinal studies investigating a causal relationship in Asian populations are lacking. This study aimed to explore the prospective association between E-DII and the risk of all-cause, cancer, and cardiovascular disease (CVD) mortality using a population-based Korean cohort.

METHODS

The analysis included data from 40,596 individuals who participated in the Korea National Health and Nutrition Examination Survey between 2007 and 2015. The exclusion criteria encompassed the diagnosis of cancer or CVD at baseline, pregnancy at baseline, and death within the first 2 years after baseline. The E-DII was calculated using data from 24-hour dietary recall interviews. Cox proportional hazard regression models were employed to calculate hazard ratios (HRs) with 95% confidence intervals (CIs) for mortality risk across E-DII tertiles.

RESULTS

Over an 8.2-year follow-up period, 2,070 deaths were recorded. Compared with the lowest E-DII, a higher index was associated with an increased risk of mortality from all causes (HR, 1.45; 95% CI, 1.25 to 1.69), cancer (HR, 1.41; 95% CI, 1.09 to 1.81), and CVD (HR, 1.53; 95% CI, 1.07 to 2.18). The association between E-DII and all-cause mortality was particularly pronounced among individuals with metabolic conditions.

CONCLUSIONS

Our findings suggest a strong positive association between high E-DII and increased mortality in Korean adults, especially those with metabolic disorders.

Summary

Korean summary
본 연구는 2007–2015년 국민건강영양조사-사망원인통계 연계 데이터를 바탕으로 한국 성인을 대상으로 식이염증지수(E-DII)와 전체, 암, 심혈관질환 사망률 간의 연관성을 분석하였음. 높은 식이염증지수는 전체 사망(HR, 1.45; 95% CI, 1.25–1.69), 암 사망(HR, 1.41; 95% CI, 1.09–1.81), 심혈관질환 사망(HR, 1.53; 95% CI, 1.07–2.18) 위험 증가와 유의하게 관련되었으며, 특히 대사질환 보유자에서 그 연관성이 두드러졌음.

Key Message
This prospective cohort study analyzed nationally representative data from the Korea National Health and Nutrition Examination Survey (2007–2015) to examine the association between the energy-adjusted Dietary Inflammatory Index (E-DII) and mortality risk. A higher E-DII was significantly associated with increased risks of all-cause (HR, 1.45; 95% CI, 1.25–1.69), cancer mortality (HR, 1.41; 95% CI, 1.09–1.81), and cardiovascular mortality (HR, 1.53; 95% CI, 1.07–2.18), particularly among individuals with metabolic disorders.

Citations

Citations to this article as recorded by

Dietary Inflammatory Index and the Risk of Gastric Precancerous Lesions Among Korean Adults in a Rural Area
Yewon Cho, Dongkyu Lee, Chang Soo Eun, Dong Soo Han, Hyun Ja Kim
Nutrients.2025; 17(22): 3502. CrossRef
Age-period-cohort analysis of dietary sodium, potassium, and sodium-to-potassium ratio in Korea
Hee Ju Jun, Shieon Kim, Garam Jo
Epidemiology and Health.2025; 47: e2025062. CrossRef

Gender differences in awareness and practices of cancer prevention recommendations in Korea: a cross-sectional survey: Yoonjoo Choi, Naeun Kim, Jin-Kyoung Oh, Yoon-Jung Choi, Bohyun Park, Byungmi Kim; Epidemiol Health. 2025;47:e2025003. Published online January 15, 2025; DOI: https://doi.org/10.4178/epih.e2025003

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Abstract

OBJECTIVES
Gender is a major determinant of health behaviors that influences cancer prevention awareness and practices. This study investigated the relationship of the awareness and practice rates of cancer prevention recommendations with gender and socioeconomic status.

METHODS

We used data from the Korean National Cancer Prevention Awareness and Practice Survey (2023). The sample included 4,000 men and women aged 20-74 years. We conducted multiple logistic regression analyses to evaluate associations with the awareness and practices of cancer prevention, and a joinpoint regression analysis using age-standardized rates to analyze trends in awareness and practice rates from 2007 to 2023.

RESULTS

The awareness rates were 79.4% and 81.2% for men and women, respectively. The overall practice rates were substantially lower (43.1% for men and 48.9% for women). For men, awareness rates did not differ significantly by socio-demographic characteristics, but practice rates increased with age (20-29: 15.9%; 60-74: 53.8%). For women, both awareness (20-29: 73.0%; 60-74: 85.7%) and practice (20-29: 16.8%; 60-74: 67.5%) rates increased with age. The easiest recommendations to follow were “reducing salt intake and avoiding burnt or charred foods” (men: 29.9%; women: 28.4%), whereas the most difficult recommendation was “engaging in regular physical activity” (men: 32.5%; women: 34.4%).

CONCLUSIONS

While awareness of cancer prevention recommendations was high, the practice of these recommendations was low. Gender influenced changes in awareness and practice rates over time, reflecting a large gap in practice. Future research should explore appropriate intervention points for cancer prevention practices and the development of more effective cancer prevention policies.

Summary

Korean summary
암 예방에 대한 인식은 남녀 모두 높은 수준이었으나, 실천에서는 성별 차이가 크게 나타났다. 효과적인 암 예방 정책 수립을 위해 성별에 따른 실천 격차를 고려한 전략이 필요하다.

Key Message
Many factors influence cancer prevention awareness and practice, and gender is a crucial determinant of health behaviour in general. This study found that while awareness was reasonably high among both men and women, there was a signifi- cant gender gap in practice. Given the variation in health behaviours by gender, further evaluation of gender effects is nec- essary to inform future policy interventions aimed at improving cancer prevention practices.

Citations

Citations to this article as recorded by

Mind the gaps and educational disparities in awareness of cancer risk factors: a cross-sectional study amongst the general public in Sweden
Cecilia Hultstrand, Ellen Brynskog, Andreas Karlsson Rosenblad, Anna-Lena Sunesson, Thomas Björk-Eriksson, Lena Sharp
BMC Public Health.2026;[Epub] CrossRef
The Korean National Codes Against Cancer: background of their establishment and the revision process
Yoonjoo Choi, Jin-Kyoung Oh, Ayoung Byeon, Byungmi Kim
Epidemiology and Health.2025; 47: e2025027. CrossRef

Contrasting income-based inequalities in incidence and mortality of breast cancer in Korea, 2006-2015: Jinwook Bahk, Hee-Yeon Kang, Young-Ho Khang, Kyunghee Jung-Choi; Epidemiol Health. 2024;46:e2024074. Published online September 11, 2024; DOI: https://doi.org/10.4178/epih.e2024074

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Abstract

OBJECTIVES
Breast cancer incidence and mortality rates in Korea are increasing. This study analyzed income-based inequalities in the incidence and mortality of women breast cancer from 2006 to 2015, using national data that covered all Korean women.

METHODS

We used the National Health Information Database from 2006 to 2015. For women aged 20 and older, the age-standardized incidence and mortality rates of breast cancer per 100,000 by income quintile per year were calculated using the direct method. The rate ratio and rate difference (RD) of the age-standardized incidence and mortality rates of breast cancer per 100,000 between the top and bottom income quintiles were calculated as relative and absolute measures for inequalities.

RESULTS

When comparing 2006 and 2015, both the incidence and mortality rates of breast cancer increased. The lowest income quintile experienced higher mortality rates despite having lower incidence rates. In 2015, the income-based RD in incidence and mortality rates between the highest and lowest income quintiles (Q1-Q5) was -19.9 (95% confidence interval [CI], -24.3 to -15.5) and 4.4 (95% CI, 2.9 to 5.8), respectively. Throughout this period, there was no statistically significant trend in income-based disparities in breast cancer incidence and mortality. The age-specific contributions to the absolute magnitude of inequality (RD) in incidence and mortality were more pronounced among middle-aged women than among older women.

CONCLUSIONS

This study found that breast cancer in Korea exhibited pro-rich inequalities in mortality despite pro-poor inequalities in incidence. More equitable policies for screening and treatment of breast cancer are needed.

Summary

Korean summary
2006년부터 2015년 한국의 유방암 불평등 추세를 분석하면, 소득수준이 낮은 여성의 발생률은 상대적으로 낮음에도 불구하고 사망률은 높은 양상을 보였다. 유방암 검진과 치료에 있어 보다 형평성을 고려한 정책이 요구된다.

Key Message
This study found that breast cancer in Korea exhibited pro-rich inequalities in mortality despite pro-poor inequalities in incidence. More equitable policies for screening and treatment of breast cancer are needed.

Citations

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Income Inequalities in Breast Cancer Survival Among Formally Employed Women in Colombia: A Cohort Study
Andrés Felipe Patiño-Benavidez, Lili Carolina Ávila-Garzón, Daniela Sánchez-Santiesteban, William Mantilla, Juan Sebastián Castillo, Vanessa Muñoz, Giancarlo Buitrago
JCO Global Oncology.2026;[Epub] CrossRef
Impact of fragmented care on cancer outcomes among korean women with breast and cervical cancer: a focus on regional and economic disparities
Sun Jung Kim, Noorhee Son, Woo-Ri Lee, Dong-Woo Choi, Seojin Park, Kyu-Tae Han
International Journal for Equity in Health.2025;[Epub] CrossRef

Systematic Review

Tea consumption and risk of all-cause, cardiovascular disease, and cancer mortality: a meta-analysis of thirty-eight prospective cohort data sets: Youngyo Kim, Youjin Je; Epidemiol Health. 2024;46:e2024056. Published online June 21, 2024; DOI: https://doi.org/10.4178/epih.e2024056

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Abstract

OBJECTIVES
Tea consumption has been considered beneficial to human health because tea contains phytochemicals such as polyphenols and theaflavins. We conducted a systematic review and meta-analysis on the association between tea consumption and mortality from all causes, cardiovascular disease (CVD), and cancer to provide a quantitative assessment of current evidence.

METHODS

The PubMed, Web of Science, and Scopus databases were searched through April 2024 to identify eligible studies. Random effects models were used to combine study-specific effect estimates (ESs).

RESULTS

A total of 38 prospective cohort data sets (from 27 papers) with 1,956,549 participants were included in this meta-analysis. The pooled ESs of the highest versus lowest categories of tea consumption were 0.90 (95% confidence interval [CI], 0.86 to 0.95) for all-cause mortality, 0.86 (95% CI, 0.79 to 0.94) for CVD mortality, and 0.90 (95% CI, 0.78 to 1.03) for cancer mortality. In the dose-response analysis, a non-linear association was observed. The greatest risk reductions were observed for the consumption of 2.0 cup/day for all-cause mortality (ES, 0.91; 95% CI, 0.88 to 0.94) and 1.5 cup/day for cancer mortality (ES, 0.92; 95% CI, 0.89 to 0.96), whereas additional consumption did not show a further reduction in the risk of death. A plateau was observed for CVD mortality at moderate consumption levels (1.5-3.0 cup/day), but a sustained reduction in mortality risk was observed at higher intake levels.

CONCLUSIONS

Moderate tea consumption (e.g., 1.5-2.0 cup/day) was associated with lower all-cause, CVD, and cancer mortality compared to no tea consumption. Further well-designed prospective studies are needed for a definitive conclusion.

Summary

Korean summary
차는 전세계적으로 널리 소비되는 음료로 그 공중보건학적 영향력이 크다. 차의 섭취와 만성질환의 관련성은 아직 일관성 있게 결론이 나지 않았는데 최근에 이 주제에 대하여 대규모의 코호트 연구 결과들이 발표된 바 있었다. 38개의 코호트 데이터에 근거한 본 메타분석의 결과는 하루 한 잔 반에서 두 잔의 차를 마시는 것이 총사망위험과 심혈관계질환이나 암으로 인한 사망 위험을 낮추는 것과 관계가 있음을 나타내고 있다.

Key Message
Tea is a commonly consumed beverage worldwide and has a significant public health impact. The association between tea consumption and risk of mortality from chronic disease remains inconsistent, and extensive cohort studies have been published recently. In this meta-analysis, including thirty-eight cohort studies, people who drank one and a half to two cups of tea daily had a lower risk of mortality from all causes, cardiovascular disease, and cancer than those who drank less tea.

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Association Between Coffee and Tea Consumption and Biological Age Acceleration: Evidence from the UK Biobank Study
Ruiye Chen, Mayinuer Yusufu, Jiahao Liu, Haoyue Yi, Xianwen Shang, Zongyuan Ge, Wei Wang, Mingguang He, Zhuoting Zhu
Ophthalmic Epidemiology.2026; : 1. CrossRef
Impact of green tea on pharmacokinetics in cardiovascular therapy: current insights
Shingen Misaka, José Pablo Werba
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Bioavailability of Tea Polyphenols: A Key Factor in Understanding Their Mechanisms of Action In Vivo and Health Effects
Mingchuan Yang, Xiangchun Zhang, Chung S. Yang
Journal of Agricultural and Food Chemistry.2025; 73(7): 3816. CrossRef
Associations of a healthy beverage pattern with all-cause and cause-specific mortality among US adults: a nationwide cohort study
Yu Feng, Haoming Wang, Kang Wang, Ziyue Li, Bohao Tan, Qirui Li, Fan Ouyang, Zhangling Chen
Nutrition Journal.2025;[Epub] CrossRef
Color Stability of Three Ceramics After Thermocycling in Coffee, Black Tea, Cola, and Water: An In Vitro Study
Dina Maleki, Donya Maleki, Arayeh Maleki, Helia Zare, AmirHossein SohrabiFar, Boonlert Kukiattrakoon
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The Impact of Tea Consumption on Cardiovascular Health
Farid Aldhuhli, Mohammed Fazal, Gouse Bin Mohammad Shaik, Srijit Das
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Beneficial health effects and possible health concerns of tea consumption: a review
Mingchuan Yang, Li Zhou, Zhipeng Kan, Zhoupin Fu, Xiangchun Zhang, Chung S. Yang
Beverage Plant Research.2025;[Epub] CrossRef
Green Tea: A Magical Herb with Miraculous Outcomes
Suraj Bhagwan Khirodkar, Mr. Vinod Chavre
International Journal of Advanced Research in Science Communication and Technology.2025; : 612. CrossRef
Molecular mechanisms of action of DIM and its clinical application
E. A. Nikitina, S. V. Orlova, T. T. Batysheva, N. V. Balashova, M. V. Alekseeva, A. N. Vodolazkaya, E. V. Prokopenko, Kh. A. Magomedova
Medical alphabet.2024; (19): 9. CrossRef

Original Articles

Interactions between vitamin B₂, the MTRR rs1801394 and MTR rs1805087 genetic polymorphisms, and colorectal cancer risk in a Korean population: Madhawa Gunathilake, Minji Kim, Jeonghee Lee, Jae Hwan Oh, Hee Jin Chang, Dae Kyung Sohn, Aesun Shin, Jeongseon Kim; Epidemiol Health. 2024;46:e2024037. Published online March 11, 2024; DOI: https://doi.org/10.4178/epih.e2024037

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Abstract

OBJECTIVES
We explored whether the association between vitamin B2 and colorectal cancer (CRC) risk could be modified by the MTRR rs1801394 and MTR rs1805087 genetic polymorphisms and examined whether the interaction effects are sex-specific.

METHODS

We performed a case-control study involving 1,420 CRC patients and 2,840 controls from the Korea National Cancer Center. Dietary vitamin B2 intake was assessed using a semiquantitative food frequency questionnaire, and the association with CRC was evaluated. Genotyping was performed using an Illumina MEGA-Expanded Array. For gene-nutrient interaction analysis, pre-matched (1,081 patients and 2,025 controls) and matched (1,081 patients and 1,081 controls) subsets were included. Unconditional and conditional logistic regression models were used to calculate odds ratios (ORs) and 95% confidence intervals (CIs).

RESULTS

A higher intake of vitamin B2 was associated with a significantly lower CRC risk (OR, 0.65; 95% CI, 0.51 to 0.82; p<0.001). Carriers of at least 1 minor allele of MTRR rs1801394 showed a significantly higher CRC risk (OR, 1.43; 95% CI, 1.12 to 1.83). Males homozygous for the major allele (A) of MTRR rs1801394 and who had a higher intake of vitamin B2 had a significantly lower CRC risk (OR, 0.31; 95% CI, 0.18 to 0.54; p-interaction=0.02). In MTR rs1805087, males homozygous for the major allele (A) and who had a higher vitamin B2 intake had a significantly lower CRC risk (OR, 0.38; 95% CI, 0.25 to 0.60; p-interaction<0.001).

CONCLUSIONS

The MTRR rs1801394 and MTR rs1805087 genetic polymorphisms may modify the association between vitamin B2 and CRC risk, particularly in males. However, further studies are warranted to confirm these interaction results.

Summary

Korean summary
본 연구는 환자-대조군 연구를 통해 비타민 B2 섭취와 대장암 발생의 관련성을 조사하고, 대장암 발생에 있어 methionine synthase (MTRR) rs1801394 및 methionine synthase reductase (MTR) rs1805087의 유전적 다형성과 식이 요인간에 상호작용을 알아보고자 한다. 비타민 B2 의 섭취는 대장암 발생의 위험도를 낮추는 것으로 나타났으며 특히, 남성의 경우 대장암 발생의 위험도가 MTRR rs1801394 및 MTR rs1805087의 유전자형과 식이 섭취에 따른 상호 관련성에 의해 영향을 받는 것으로 나타났다.

Key Message
We conducted a case-control study to observe the association between vitamin B₂ intake and the risk of colorectal cancer (CRC), and to determine whether this association could be modified by the methionine synthase (MTRR) rs1801394 and methionine synthase reductase (MTR) rs1805087 genetic polymorphisms. Higher intake of vitamin B₂ is a protective factor in lowering CRC risk, and rs1801394 of MTRR and rs1805087 of MTR may particularly modify this association in males.

Citations

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Recent Advances on the Role of B Vitamins in Cancer Prevention and Progression
Zachary Frost, Sandra Bakhit, Chelsea N. Amaefuna, Ryan V. Powers, Kota V. Ramana
International Journal of Molecular Sciences.2025; 26(5): 1967. CrossRef
Dietary and Circulating Vitamins, Polymorphisms of Vitamin Metabolism Genes, and the Risk of Gastrointestinal Cancers: A Systematic Review and Meta-Analysis
Xin-Ling Wang, Heng-Min Xu, Zhi-Qiang Hu, Kai-Feng Pan, Wen-Qing Li
Clinical and Translational Gastroenterology.2025; 16(9): e00899. CrossRef
Genetic variants in folate metabolism-related genes, serum folate and hepatocellular carcinoma survival: the Guangdong Liver Cancer Cohort study
Yunshan Li, Jing Shu, Peishan Tan, Xiaocong Dong, Mingjie Zhang, Tongtong He, Zhijun Yang, Xuehong Zhang, Edward L. Giovannucci, Zhaoyan Liu, Zhongguo Zhou, Qijiong Li, Yanjun Xu, Xiaojun Xu, Tianyou Peng, Jialin Lu, Yaojun Zhang, Huilian Zhu, Aiping Fang
British Journal of Nutrition.2024; 132(11): 1411. CrossRef

Influence of practice location on prescribing, diabetes care, and colorectal cancer screening among Czech general practitioners during the COVID-19 pandemic: Jan Bělobrádek, Luděk Šídlo, Tom Philipp; Epidemiol Health. 2024;46:e2024033. Published online February 23, 2024; DOI: https://doi.org/10.4178/epih.e2024033

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Abstract

OBJECTIVES
The provision of primary health care was not interrupted during the coronavirus disease 2019 (COVID-19) pandemic in Czechia, although the capacity and resources of providers changed. We examined how the pandemic affected individual general practices throughout 2017-2021, focusing on differences between urban and rural practices.

METHODS

We analysed data from the largest health insurance company in Czechia, which provides care to 4.5 million people (60% of the population). We evaluated the prescription volume, diabetes care procedures, and faecal immunochemical test (FIT) in preventive care and new pandemic-related procedures (remote consultations, testing, and vaccinations). For the spatial distribution of practices, we adapted the Organisation for Economic Cooperation and Development typology.

RESULTS

We observed minimal declines in 2020 in the rate of prescribing (-1.0%) and diabetes care (-5.1%), with a rapid resumption in 2021, but a substantial decline in FIT (-17.8% in 2020) with slow resumption. Remote consultations were used by 94% of all practices regardless of location, with testing and vaccinations more commonly performed by rural general practitioners (GPs).

CONCLUSIONS

Primary care in Czechia rose to the challenge of the COVID-19 pandemic, as shown by the finding that the volume of healthcare services provided through primary care did not decrease across most of the monitored parameters. This study also confirmed that rural GPs provide more care in-house, both in terms of prescribing and procedures performed in their practices. Future studies will need to focus on preventive care, which the pandemic has dampened in GP practices in Czechia.

Summary

Key Message
Primary care in Czechia has effectively adapted to the changes brought about by the COVID-19 pandemic. Minimal impact was observed in prescribtions and diabetic patient care. There was a significant decline in colorectal cancer screening, with a slow restitution after the pandemic subsided. Rural GPs consistently provided in-house treatment and have higher shares of both prescribing and diabetes care, as well as performing more COVID-19 specific procedures.

Citations

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Geographical Disparities in Faecal Immunochemical Test‐Based Colorectal Cancer Screening Participation and Positivity Rates: A Systematic Review and Meta‐Analysis
Melkalem Mamuye Azanaw, Erin L. Symonds, Geraldine Laven‐Law, Wudneh Simegn Belay, Syme Aftab, Muktar B. Ahmed, Molla M. Wassie
Health Promotion Journal of Australia.2026;[Epub] CrossRef
Effect of Age, Practice Location and Covid-19 on the Use of POCT Methods by General Practitioners in Czechia in 2017–2021
Jan Bělobrádek, Luděk Šídlo, Tom Philipp
Acta Medica (Hradec Kralove, Czech Republic).2025; 68(3): 87. CrossRef

Adherence to the American Cancer Society guidelines on nutrition and physical activity for cancer survivors and biomarkers of inflammation among breast cancer survivors: Minji Kang, Sihan Song, Hyun Jeong Cho, Zisun Kim, Hyun Jo Youn, Jihyoung Cho, Jun Won Min, Yoo Seok Kim, Sang-Woon Choi, Jung Eun Lee; Epidemiol Health. 2024;46:e2024026. Published online January 25, 2024; DOI: https://doi.org/10.4178/epih.e2024026

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Abstract

OBJECTIVES
This study investigated whether adherence to the overall lifestyle recommendations in the American Cancer Society (ACS) guidelines on nutrition and physical activity for cancer survivors was associated with inflammation in breast cancer survivors.

METHODS

The study included 409 women who had undergone breast cancer surgery at least 1 year before enrollment. A generalized linear model was used to estimate the least square means and 95% confidence intervals of plasma levels of inflammatory markers according to lifestyle factors defined in terms of adherence to the ACS guidelines.

RESULTS

Higher overall adherence scores were associated with lower levels of high-sensitivity C-reactive protein (hs-CRP) (p for trend=0.015) and higher levels of adiponectin (p for trend=0.009). Similar significant associations of hs-CRP (p for trend= 0.004) and adiponectin (p for trend=0.010) levels were observed with the score for the body mass index (BMI) component of the adherence score. A higher diet component score was associated with a higher adiponectin level (p for trend=0.020), but there was no significant association for the physical activity component score.

CONCLUSIONS

The present study’s findings suggest that maintaining a healthy lifestyle according to the ACS guidelines was associated with beneficial effects on inflammatory marker levels, especially hs-CRP and adiponectin, among breast cancer survivors. Among the 3 components of lifestyle guidelines, the BMI component exhibited the most similar tendency to the overall adherence score in relation to inflammatory indicators. Further prospective and intervention studies are needed to investigate longitudinal associations between lifestyle factors and inflammatory markers among breast cancer survivors.

Summary

Korean summary
- 한국인 유방암 생존자를 대상으로 한 연구에서, 암 생존자를 위한 영양 및 신체 활동에 관한 미국암협회 (American Cancer Society, ACS) 지침을 따라 건강한 생활 습관을 유지하는 것이 혈중 염증 마커 수준, 특히 낮은 hs-CRP와 높은 adiponectin 수준과 관련이 있었습니다.
- 체질량지수 (Body Mass Index, BMI)를 적절한 수준 (18.5-23 kg/m²)으로 유지하는 것은 낮은 hs- CRP 수준과 높은 adiponectin 수준과 관련이 있는 것으로 나타났습니다.
- 또한, 과일, 야채 및 통곡물이 풍부하고 적색육 및 가공육을 적게 섭취하는 건강한 식단은 혈중 adiponectin 수치가 높은 것과 관련이 있었습니다.

Key Message
• Maintaining a healthy lifestyle according to the American Cancer Society (ACS) Guidelines on Nutrition and Physical Activity for Cancer Survivors was associated with favorable levels of inflammatory markers, especially in hs-CRP and adiponectin among breast cancer survivors.
• Maintaining an adequate BMI of 18.5 to 23 kg/m2 was associated with lower levels of hs-CRP and higher adiponectin levels.
• In addition, a healthy diet — indicating a diet high in fruits, vegetables, and whole grains, and low in red and processed meats — was associated with higher adiponectin levels.

Citations

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Dietary isoflavone intake among breast cancer survivors and cancer-free women
Sihan Song, Hyeong-Gon Moon, Dong-Young Noh, So-Youn Jung, Eun Sook Lee, Zisun Kim, Hyun Jo Youn, Jihyoung Cho, Young Bum Yoo, Se Kyung Lee, Jeong Eon Lee, Seok Jin Nam, Yoo Seok Kim, Jun Won Min, Shinyoung Jun, Hyojee Joung, Jung Eun Lee
Nutrition Research and Practice.2025; 19(1): 80. CrossRef
Dietary intake and plasma isoflavones are inversely associated with inflammatory markers in breast cancer survivors: A cross-sectional study
Sihan Song, Zisun Kim, Hyun Jo Youn, Jihyoung Cho, Yoo Seok Kim, Jun Won Min, Sang-Woon Choi, Adrian A. Franke, Shinyoung Jun, Hyojee Joung, Jung Eun Lee
Nutrition Research.2025; 138: 22. CrossRef
Adherence to the Mediterranean diet and mortality in cancer survivors: a Nationwide study with mediation and subgroup analyses
Bowen Zha, Lizhou Dou, Chen Zhang, Shun He, Guiqi Wang
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Risk factors for early-onset lung cancer in Korea: analysis of a nationally representative population-based cohort: Jihun Kang, Taeyun Kim, Kyung-Do Han, Jin-Hyung Jung, Su-Min Jeong, Yo Hwan Yeo, Kyuwon Jung, Hyun Lee, Jong Ho Cho, Dong Wook Shin; Epidemiol Health. 2023;45:e2023101. Published online November 21, 2023; DOI: https://doi.org/10.4178/epih.e2023101

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
We examined the associations of socioeconomic factors, health behaviors, and comorbidities with early-onset lung cancer.

METHODS

The study included 6,794,287 individuals aged 20-39 years who participated in a Korean national health check-up program from 2009 to 2012. During the follow-up period, 4,684 participants developed lung cancer. Multivariable Cox regression analysis was used to estimate the independent associations of potential risk factors with incident lung cancer.

RESULTS

Older age (multivariable hazard ratio [mHR], 1.13; 95% confidence interval [CI], 1.12 to 1.14) and female sex (mHR, 1.62; 95% CI, 1.49 to 1.75) were associated with increased lung cancer risk. Current smoking was also associated with elevated risk (<10 pack-years: mHR, 1.12; 95% CI, 1.01 to 1.24; ≥10 pack-years: mHR, 1.30; 95% CI, 1.18 to 1.45), but past smoking was not. Although mild alcohol consumption (<10 g/day) was associated with lower lung cancer risk (mHR, 0.92; 95% CI, 0.86 to 0.99), heavier alcohol consumption (≥10 g/day) was not. Higher income (highest vs. lowest quartile: mHR, 0.86; 95% CI, 0.78 to 0.94), physical activity for at least 1,500 metabolic equivalent of task-min/wk (vs. non-exercisers: mHR, 0.83; 95% CI, 0.69 to 0.99) and obesity (vs. normal weight: mHR, 0.89; 95% CI, 0.83 to 0.96) were associated with lower lung cancer risk, whereas metabolic syndrome was associated with increased risk (mHR, 1.13; 95% CI, 1.03 to 1.24).

CONCLUSIONS

In young adults, age, female sex, smoking, and metabolic syndrome were risk factors for early-onset lung cancer, while high income, physical activity, and obesity displayed protective effects.

Summary

Korean summary
나이, 여성, 흡연, 그리고 대사 증후군은 조기 발생 폐암의 위험도 증가와 연관이 있었다. 반면에 높은 소득, 신체 활동, 비만은 젊은 성인에서 폐암 발생의 위험도 감소와 연관성을 나타내었다.

Key Message
Age, female sex, smoking, and metabolic syndrome were risk factors for early-onset lung cancer. While, high income, physical activity, and obesity displayed protective effects on the development of lung cancer in young adults.

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50-Year age threshold for early-onset NSCLC: A SEER-TCGA retrospective analysis reveals a prognostic paradox based on age treatment response
Zheng Lu, Peilan Zheng, Yi Liao, Haiyan Wang, Keyu Zhu, Yiyang Chen, Zhixin Lin, Xinyan Huang, Yu Wang, Jingrong Yang
International Journal of Surgery.2026; 112(2): 3989. CrossRef
Comprehensive characterization of early-onset lung cancer, in Chinese young adults
Ye Tian, Rui Ma, Wenchang Zhao, Shumin Wang, Chuanjiang Zhou, Weibing Wu, Bo Yang, Hua Xin, Hongyan Wang, Pengfei Li, Ranhua Li, Changhong Liu, Yao Lu, Qian Yu, Chengyang Song, Han Zhang, Ruipu Liang, Lei Zhang, Di Zhou, Xitong Zhao, Zhuo Wu, Yafei Qi, Ru
Nature Communications.2025;[Epub] CrossRef
Early-onset lung cancer in Asia: a narrative review
Roselle B. De Guzman
Frontiers in Oncology.2025;[Epub] CrossRef
Emerging Trends in Global Lung Cancer Burden
Lynn Y.-W. Shong, David C.-L. Lam
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Association between long-term exposure to a mixture of ambient air pollutants and the incidences of bladder and kidney cancers
Chung Ho Kim, Seyoung Kim, Yoon-Hee Kang, Soontae Kim, Byungmi Kim, Bomi Park
Environmental Research.2025; 285: 122667. CrossRef

Interaction between vitamin E intake and a COMT gene variant on colorectal cancer risk among Korean adults: a case-control study: Shinyoung Jun, Madhawa Gunathilake, Jeonghee Lee, Jae Hwan Oh, Hee Jin Chang, Dae Kyung Sohn, Aesun Shin, Jeongseon Kim; Epidemiol Health. 2023;45:e2023100. Published online November 14, 2023; DOI: https://doi.org/10.4178/epih.e2023100

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Previous human trials have not supported the anticarcinogenic effect of vitamin E despite biological plausibility and considerable epidemiological evidence. A possible explanation for this inconsistency is the interactive effect of the catechol-O-methyltransferase (COMT) gene and supplemental vitamin E on cancer. We examined whether a COMT gene variant modulates the effect of dietary vitamin E intake on colorectal cancer (CRC) risk.

METHODS

In this case-control study of Korean adults (975 cases and 975 age- and sex-matched controls), dietary vitamin E density (mg/1,000 kcal) was measured using a semiquantitative food frequency questionnaire, COMT single nucleotide polymorphism (SNP) rs740603 (A>G) was genotyped, and CRC was verified histologically. We estimated odds ratios (ORs) and 95% confidence intervals (CIs) using unconditional logistic regression models with adjustments for potential confounders.

RESULTS

Higher vitamin E density was associated with a lower risk of CRC (highest vs. lowest quartiles: OR, 0.72; 95% CI, 0.55 to 0.96; p-for-trend=0.002). When stratified by COMT SNP rs740603 genotype, the inverse association between vitamin E density and CRC risk was confined to those with at least 1 A allele (≥median vs. <median: OR, 0.63; 95% CI, 0.51 to 0.78). The interaction between rs740603 and vitamin E density was significant (p-for-interaction=0.020). No direct association was observed between COMT SNP rs740603 and CRC risk (OR, 1.08; 95% CI, 0.83 to 1.41).

CONCLUSIONS

Our findings support a role for a genetic polymorphism in COMT in modifying the association between dietary vitamin E intake and CRC.

Summary

Korean summary
본 연구는 국립암센터에서 수집한 대장암 환자-대조군 자료를 활용하여, catechol-O-methyltransferase (COMT) 유전자의 단일염기다형성(SNP)에 따라 비타민 E 섭취와 대장암 위험 간의 연관성이 달라지는지 파악하고자 하였다. 분석 결과, COMT SNP rs740603의 유전자형에 따라 식이를 통한 비타민 E 섭취 밀도와 대장암 위험 간의 연관성이 다르게 나타나 COMT 유전자와 비타민 E 섭취 간의 상호작용이 대장암 발생 위험에 영향을 미칠 가능성이 있음을 제시하였다.

Key Message
In this case-control study of Korean adults, we examined whether a polymorphism in the catechol-O-methyltransferase (COMT) gene modulates the effect of dietary vitamin E intake on colorectal cancer risk. Our results suggest that the inverse association between vitamin E density and colorectal cancer risk is confined to carriers of the COMT rs740603 A allele. The findings of our study support the interactive effect of the COMT gene and vitamin E intake on colorectal cancer risk.

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Enterococcus-driven metabolite-host gene networks in IBD-associated colorectal carcinogenesis: integrative multi-omics and experimental validation
Gang Huang, Jiani Liu, Zhipeng Cheng, Yixin Chen, Kexin Chen, Wan Liu, Hancong Liu, Xinhao Xia, Man Lu, Wenxi Cui, Qingqing Zhang, Yi Yuan, Fei Zhong, Yiwen Liao
Frontiers in Cell and Developmental Biology.2026;[Epub] CrossRef
Dietary and Circulating Vitamins, Polymorphisms of Vitamin Metabolism Genes, and the Risk of Gastrointestinal Cancers: A Systematic Review and Meta-Analysis
Xin-Ling Wang, Heng-Min Xu, Zhi-Qiang Hu, Kai-Feng Pan, Wen-Qing Li
Clinical and Translational Gastroenterology.2025; 16(9): e00899. CrossRef
The Role of Dietary Vitamins and Antioxidants in Preventing Colorectal Cancer: A Systematic Review
Mohammed Ajebli, Christopher R Meretsky, Mourad Akdad, Ayoub Amssayef, Morad Hebi
Cureus.2024;[Epub] CrossRef

Socioeconomic inequality in organized and opportunistic screening for colorectal cancer: results from the Korean National Cancer Screening Survey, 2009-2021: Xuan Quy Luu, Kyeongmin Lee, Jae Kwan Jun, Mina Suh, Kui Son Choi; Epidemiol Health. 2023;45:e2023086. Published online September 17, 2023; DOI: https://doi.org/10.4178/epih.e2023086

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
This study aimed to investigate socioeconomic status (SES)-based inequality in colorectal cancer (CRC) screening in Korea. We assessed whether the rates of opportunistic and organized CRC screening differed according to income and education levels.

METHODS

We analyzed data from the Korean National Cancer Screening Survey of 27,654 cancer-free individuals, aged 50-74 years, from 2009 to 2021. The weighted cancer screening rates with trends were estimated with the average annual percentage change using joinpoint regression. Inequality was calculated in both relative and absolute terms, based on a Poisson regression model.

RESULTS

The organized screening rate increased significantly from 22.1% in 2009 to 53.1% in 2020 and 50.6% in 2021, with an average annual change of 8.6% (95% confidence interval [CI], 4.9 to 12.5). In contrast, no significant trend was observed for opportunistic screening. The SES inequality in opportunistic screening uptake was indicated by a slope index of inequality (SII) of 9.74% (95% CI, 6.36 to 13.12), relative index of inequality (RII) of 2.18 (95% CI, 1.75 to 2.70) in terms of education level; and an SII of 7.03% (95% CI, 4.09 to 9.98), RII of 1.81 (95% CI, 1.41 to 2.31) in terms of measured income. Although there was an increasing trend in income inequality, no significant SES inequalities were observed in the overall estimates for organized screening.

CONCLUSIONS

Organized CRC screening is effective in improving the participation rate, regardless of SES. However, significant inequalities were found in opportunistic screening, suggesting room for improvement in the overall equity of CRC screening.

Summary

Korean summary
이번 연구는 한국의 대장암 검진에서 사회경제적 수준에 따른 불평등이 있는지를 분석했다. 국가암검진사업 도입 이래로 2009-2021년 연구기간 동안 공공검진을 통한 대장암 수검률은 지속적으로 증가한 반면, 개인검진의 증가는 관찰되지 않았다. 특히 공공 검진의 경우 소득이나 교육수준에 따른 수검률에 차이는 없는 반면, 개인검진에서는 상당한불평등이 관찰되었다.

Key Message
"The study investigated socioeconomic status (SES)-based inequality in colorectal cancer (CRC) screening in Korea. We found that the introduction of the National Cancer Screening Program for CRC effectively increased the participation rate, regardless of the SES of the individuals throughout the study period. However, significant inequalities were observed in opportunistic screening related to education and income."

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Simon Van den bergh, Lidia Casas, Gökhan Ertaylan, Guido Van Hal, Jos Bessems
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Journal of Infection and Public Health.2024; 17(12): 102567. CrossRef
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Su-Min Jeong, Kyu-Won Jung, Juwon Park, Nayeon Kim, Dong Wook Shin, Mina Suh
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Adherence to the World Cancer Research Fund/American Institute for Cancer Research and Korean Cancer Prevention Guidelines and cancer risk: a prospective cohort study from the Health Examinees-Gem study: Jeeyoo Lee, Aesun Shin, Woo-Kyoung Shin, Ji-Yeob Choi, Daehee Kang, Jong-Koo Lee; Epidemiol Health. 2023;45:e2023070. Published online August 1, 2023; DOI: https://doi.org/10.4178/epih.e2023070

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
The purpose of this study was to explore the association between adherence to 2 cancer prevention recommendations and cancer risk.

METHODS

In total, 104,386 individuals aged 40-69 years old who were recruited between 2004 and 2013 in the Health Examinees-Gem study were included. Adherence scores were constructed based on 8 items from the World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) cancer prevention recommendations, including body weight, physical activity, diet, alcohol consumption and breastfeeding, and on 6 items from the Korean cancer prevention guidelines (smoking status, eating vegetables and fruits, salty foods, alcohol intake, physical activity, and body weight). A Cox proportional hazards model was used to estimate the associations between adherence scores and the risk of total and 5 major cancers.

RESULTS

The multivariable hazard ratio (HR) for total cancer with the high adherence score versus the lowest score (4.25-7.00 vs. 0.00-3.25) for the WCRF/AICR guidelines was 0.91 (95% confidence interval [CI], 0.82 to 1.00) in men. A reduced breast cancer risk was observed among women with the highest score. Men within the highest category of the Korean cancer prevention guideline score (3.25-6.00) had an HR of 0.80 (95% CI, 0.73 to 0.88) for developing total cancer compared to men within the lowest score (0.00-2.50). The higher adherence group among men showed lower risks of developing stomach, colorectal, and lung cancers.

CONCLUSIONS

Adhering to guidelines for cancer prevention can help to reduce the risk of developing cancer in Korean men. The association might differ by cancer type and gender.

Summary

Korean summary
- 암예방 가이드라인 준수가 실제로 암 발생을 예방하는지에 대한 해외 연구들이 다수 있으나 한국을 포함한 아시아 국가에서 수행된 연구는 없다. - 국제암연구재단 암예방수칙과 한국 암예방수칙을 준수하는 한국인 남성에서 암 발생 감소가 관찰되었다. 이러한 관련성은 암종에 따라 다르게 나타났다.

Key Message
- The adherence to the World Cancer Research Fund/American Institute of Cancer Research (WCRF/AICR) guidelines on cancer prevention has been addressed in several studies in Western countries. -Among the Korean population, adherence to WCRF/AICR cancer prevention guidelines as well as the Korean cancer prevention guidelines helps prevent cancer in men. Association varies by gender and type of cancer.

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Heterogeneous Clustering of Multiomics Data for Breast Cancer Subgroup Classification and Detection
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Changes in metabolic syndrome and the risk of breast and endometrial cancer according to menopause in Korean women: Thi Xuan Mai Tran, Soyeoun Kim, Boyoung Park; Epidemiol Health. 2023;45:e2023049. Published online May 1, 2023; DOI: https://doi.org/10.4178/epih.e2023049

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
This study investigated how changes in metabolic syndrome (MetS) are associated with the subsequent risk of breast and endometrial cancer according to menopausal status.

METHODS

This cohort study, using data from the National Health Insurance Service database, included women aged ≥40 years who underwent 2 biennial cancer screenings (2009-2010 and 2011-2012) and were followed up until 2020. Participants were grouped into MetS-free, MetS-recovery, MetS-development, and MetS-persistent groups. Menopausal status (premenopausal, perimenopausal, and postmenopausal) was assessed at 2 screenings. Cox proportional hazard regression was used to assess the association between MetS changes and cancer risk.

RESULTS

In 3,031,980 women, breast and endometrial cancers were detected in 39,184 and 4,298, respectively. Compared with the MetS-free group, those who recovered, developed, or had persistent MetS showed an increased risk of breast cancer, with adjusted hazard ratios (aHRs) of 1.05, 1.05, and 1.11, respectively (p<0.005). MetS persistence was associated with an increased risk of breast cancer in postmenopausal women (aHR, 1.12, 95% confidence interval [CI], 1.08 to 1.16) but not in premenopausal or perimenopausal women. MetS persistence was associated with an increased risk of endometrial cancer in premenopausal, perimenopausal, and postmenopausal women, with aHRs of 1.41 (95% CI, 1.17 to 1.70), 1.59 (95% CI, 1.19 to 2.12), and 1.47 (95% CI, 1.32 to 1.63), respectively.

CONCLUSIONS

Increased breast cancer risk was associated with recovered, developed, and persistent MetS in postmenopausal women. Meanwhile, increased endometrial cancer risk was found in obese women who recovered from MetS or persistently had MetS, regardless of menopausal status, when compared to MetS-free women.

Summary

Korean summary
- 폐경후 여성에서 대사증후군이 회복되었거나, 지속적으로 대사증후군을 앓고 있거나, 대사증후군이 발병한 여성은 유방암 위험과 관련이 있었습니다. - 한편, 폐경 상태와 관계없이 대사증후군에서 회복되었거나 지속적으로 대사증후군를 앓고 있는 비만 여성은 대사증후군이 없는 여성에 비해 자궁내막암 위험이 증가하는 것으로 나타났습니다.

Key Message
- Increased breast cancer risk was associated with recovered, developed, and persistent MetS in postmenopausal women. - Increased endometrial cancer risk was found in obese women who recovered from MetS or persistently had MetS, regardless of menopausal status, when compared to MetS-free women.

Citations

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Metabolic obesity phenotypes and breast cancer risk before and after menopause: A nationwide cohort study in South Korea
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Cohort Profile

Integrated database-based Screening Cohort for Asian Nomadic descendants in China (Scan-China): Insights on prospective ethnicity-focused cancer screening: Yuelin Yu, Liying Qiao, Jing Han, Weiwei Wang, Weiwei Kang, Yunjing Zhang, Shu Shang, Ruogu Meng, Lin Zhuo, Siyan Zhan, Yunfeng Xi, Shengfeng Wang; Epidemiol Health. 2023;45:e2023048. Published online April 18, 2023; DOI: https://doi.org/10.4178/epih.e2023048

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Abstract

Established in 2017, the Screening Cohort for Asian Nomadic descendants in China (Scan-China) has benefited over 180,000 members of a multi-ethnic population, particularly individuals of Mongolian descent compared with the general population (Han ethnicity), in the Inner Mongolia Autonomous Region, China. This cohort study aims to evaluate the effectiveness of cancer screening and serve as a real-world data platform for cancer studies. The 6 most prevalent cancers in China are considered—namely, breast, lung, colorectal, gastric, liver and esophageal cancer. After baseline cancer risk assessments and screening tests, both active and passive follow-up (based on the healthcare insurance database, cancer registry, the front page of hospital medical records, and death certificates) will be conducted to trace participants’ onset and progression of cancers and other prevalent chronic diseases. Scan-China has preliminarily found a disproportionately lower screening participation rate and higher incidence/mortality rates of esophageal and breast cancer among the Mongolian population than among their Han counterparts. Further research will explore the cancer burden, natural history, treatment patterns, and risk factors of the target cancers.

Summary

Key Message
- Scan-China is the first and largest electronic health data (EHD)-integrated cancer screening program for the Mongolian ethnicity in Inner Mongolia. - Scan-China aims to evaluate the effectiveness of screening interventions, particularly on ethnic minorities, portray the natural history, explore risk factors and summarize treatment patterns and updated outcomes of prevalent tumors/other chronic diseases. - Scan-China database comprises baseline cancer risk assessment, screening tests results, active follow-up investigation for participants at high risk and EHD-integrated passive follow-up. Data sources for passive follow-up include healthcare insurance database, cancer registry, front page of hospital medical record and death certificates.

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Comparison of survival outcomes between kidney transplant and dialysis in patients with previous cancer
Guohua He, Yunfeng Xi, Xiaoyun Jiang, Liying Qiao, Yunjing Zhang, Weiwei Kang, Lu Xu, Yingzi Yang, Huziwei Zhou, Guozhen Liu, Mingyuan Wang, Shengfeng Wang
Chinese Medical Journal.2025;[Epub] CrossRef
Higher disease burden and lower utilization in Mongolian with breast cancer: a 9-year retrospective cohort study of 18.19 million adults in China
Jieying Chen, Liying Qiao, Meng Qi, Yunjing Zhang, Ying Yan, Weiwei Kang, Huziwei Zhou, Yuelin Yu, Yalei Ke, Yuling Jiang, Yingting Rao, Lu Xu, Guohua He, Jing Ren, Xue Yan, Siwei Deng, Xinyu Yang, Yutong Song, Yingzi Yang, Qiaorui Wen, Jing Han, Yiwei Wu
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Original Articles

Risk of cancer, cardiovascular disease, thromboembolism, and mortality in patients with rheumatoid arthritis receiving Janus kinase inhibitors: a real-world retrospective observational study using Korean health insurance data: Hong Ki Min, Hyeongsu Kim, Ho Jin Jeong, Se Hee Kim, Hae-Rim Kim, Sang-Heon Lee, KunSei Lee, Soon-Ae Shin, Jong Heon Park; Epidemiol Health. 2023;45:e2023045. Published online April 15, 2023; DOI: https://doi.org/10.4178/epih.e2023045

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
This study investigated whether Janus kinase inhibitors (JAKis) raise the risk of cardiovascular disease (CVD), venous thromboembolism (VTE), and cancer in patients with rheumatoid arthritis (RA).

METHODS

We conducted a real-world retrospective observational study using data obtained from the Korean National Health Insurance Service database. Two data sets were analyzed: tumor necrosis factor inhibitor (TNFi)/JAKi-naive RA patients (set 1) and all RA patients who used TNFis or JAKis (set 2). The incidence rate ratios (IRRs) and hazard ratios (HRs) for acute myocardial infarction (AMI), stroke, cardiovascular (CV)-related mortality, major adverse cardiovascular events (MACE), VTE, arterial thromboembolism (ATE), cancer, and all-cause mortality were compared between the JAKi and TNFi groups.

RESULTS

Set 1 included 1,596 RA patients (JAKi group: 645; TNFi group: 951), and set 2 included 11,765 RA patients (JAKi group: 2,498; TNFi group: 9,267). No adverse events (AEs) showed significantly higher IRRs in the JAKi groups than in the TNFi groups of sets 1 and 2. The HRs for MACE in the JAKi groups of sets 1 and 2 were 0.59 (95% confidence [CI], 0.35 to 0.99) and 0.80 (95% CI, 0.67 to 0.97), respectively. The JAKi group of set 2 showed a significantly higher risk of all-cause mortality (HR, 1.71; 95% CI, 1.32 to 2.20), but the other AEs did not demonstrate increased risks in the JAKi groups.

CONCLUSIONS

In this study, JAKis did not increase the risk of AMI, stroke, CV-related mortality, MACE, VTE, ATE, or cancer in Korean RA patients relative to TNFis.

Summary

Korean summary
1. 한국인 류마티스관절염 환자를 대상으로 한 실제임상자료 결과, JAK 억제제가 종양괴사인자 억제제에 비해 심혈관질환, 혈전증, 암 등의 심각한 부작용을 증가시키지는 않았다. 2. 본 연구를 토대로 한국인 대상자에서 JAK 억제제가 심혈관질환 등의 심각한 부작용을 증가시키는지에 대한 재평가가 필요하다.

Key Message
1. The real word-data based results showed that risks of MACE, thromboembolism, and cancers were not increased in Korean RA patients with JAK inhibitor when compared to Korean RA patients with TNF inhibitors. 2. Therefore, the risk of serious adverse events of JAK inhibitors in Korean population should be reconsidered and reassessed before adding black box warning of JAK inhibitors.

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Risiko inzidenter Malignome nach Exposition gegenüber Januskinase-Inhibitoren und biologischen DMARD
Jutta Bauhammer
Zeitschrift für Rheumatologie.2026; 85(3): 225. CrossRef
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Martin Schäfer, Anja Strangfeld
Zeitschrift für Rheumatologie.2026; 85(1): 65. CrossRef
Risk of Malignancies and Major Adverse Cardiovascular Events Related to JAK Inhibitors in Rheumatoid Arthritis: A Meta‐Analysis
Hongmei Duan, Chao Jiang, Binglun Zhang, Hefan Meng, Weizheng Zhou, Wei Yan, Tianlong Jiang
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Hannah Bower, Thomas Frisell, Daniela di Giuseppe, Benedicte Delcoigne, Ulf Lindström, Carl Turesson, Katerina Chatzidionysiou, Elisabet Lindqvist, Ann Knight, Helena Forsblad-d'Elia, Johan Askling
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Disease burden of prostate cancer from 2014 to 2019 in the United States: estimation from the Global Burden of Disease Study 2019 and Medical Expenditure Panel Survey: Shen Lin, Dong Lin, Yiyuan Li, Lixian Zhong, Wei Zhou, Yajing Wu, Chen Xie, Shaohong Luo, Xiaoting Huang, Xiongwei Xu, Xiuhua Weng; Epidemiol Health. 2023;45:e2023038. Published online March 21, 2023; DOI: https://doi.org/10.4178/epih.e2023038

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
The aim of this study was to evaluate the disease burden of prostate cancer (PC) and assess key influencing factors associated with the disease expenditures of PC in the United States.

METHODS

The total deaths, incidence, prevalence, and disability-adjusted life-years of PC were obtained from the Global Burden of Disease Study 2019. The Medical Expenditure Panel Survey was used to estimate healthcare expenditures and productivity loss and to investigate patterns of payment and use of healthcare resources in the United States. A multivariable logistic regression model was conducted to identify key factors influencing expenditures.

RESULTS

For patients aged 50 and older, the burden for all age groups showed a modest increase over the 6-year period. Annual medical expenditures were estimated to range from US$24.8 billion to US$39.2 billion from 2014 to 2019. The annual loss in productivity for patients was approximately US$1,200. The top 3 major components of medical costs were hospital inpatient stays, prescription medicines, and office-based visits. Medicare was the largest source of payments for survivors. In terms of drug consumption, genitourinary tract agents (57.0%) and antineoplastics (18.6%) were the main therapeutic drugs. High medical expenditures were positively associated with age (p=0.005), having private health insurance (p=0.016), more comorbidities, not currently smoking (p=0.001), and patient self-perception of fair/poor health status (p<0.001).

CONCLUSIONS

From 2014 to 2019, the national real-world data of PC revealed that the disease burden in the United States continued to increase, which was partly related to patient characteristics.

Summary

Key Message
This study quantified the disease burden of prostate cancer and showed that the burden is still substantial in the US from 2014-2019. This study explored the patients’ payment sources for healthcare expenditures and identified the top types of healthcare service expenditure for PC survivors. Moreover, this study also assessed key influencing factors for the high healthcare expenditures, which were associated with some demographic characteristics, such as age, having private health insurance, more comorbidities, smoking situation, and patients’ self-perceived health status.

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A Systematic Review of the Economic Burden of Prostate Cancer: Direct and Indirect Cost Perspectives
Josep Darbà, Meritxell Ascanio, Antonio Rodríguez
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Youao Zhang, Pinhao Wang, Zixuan Jia, Zesen Zheng, Jieyan Wang, Hui Liang
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Global trends and regional variations in PCa burden: A focus on China's rapid growth
Yu Gan, Hengfeng Zhou, Panpan Feng, Han Gao, Rui Li, Shuo Wang
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Xiaohu Zhao, Shuchen Liu, Zhihui Zou, Chaozhao Liang
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Elisa FABBRO, Giulia ZAMAGNI, Giulia CARRERAS, Luca FALZONE, Silvano GALLUS, Giuseppe GORINI, Paolo LAURIOLA, Carlo LA VECCHIA, Caterina LEDDA, Andrea MAUGERI, Giuseppe MINERVINI, Mohsen NAGHAVI, Goran L. OMER, Mario V. PAPA, Simone PERNA, Lorenzo MONASTA
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The associations of tobacco use, sexually transmitted infections, HPV vaccination, and screening with the global incidence of cervical cancer: an ecological time series modeling study: Luyan Zheng, Yushi Lin, Jie Wu, Min Zheng; Epidemiol Health. 2023;45:e2023005. Published online December 13, 2022; DOI: https://doi.org/10.4178/epih.e2023005

17,205 View
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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
We aimed to quantify the temporal associations between cervical cancer incidence and cervical cancer-related factors and to predict the number of new cervical cancer cases averted under counterfactual scenarios compared to the status quo scenario.

METHODS

We described temporal trends in cervical cancer and associated factors globally from 1990 to 2019. We then used generalized linear mixed models to explore the impact of tobacco use, sexually transmitted infections (STIs), human papillomavirus (HPV) vaccination, and cervical screening on cervical cancer incidence. A counterfactual analysis was performed to simulate the most effective scenario for reducing cervical cancer incidence.

RESULTS

The worldwide incidence of cervical cancer showed a downward trend over the past 3 decades (estimated annual percentage change, -0.72%), although the incidence remained high (>30 cases per 100,000 persons) in sub-Saharan Africa, Latin America, and the Caribbean. Higher smoking and STI prevalence showed significant direct associations with the incidence of cervical cancer, whereas HPV vaccination and screening coverage showed significant inverse associations. If the strategic goals for accelerating the elimination of cervical cancer and tobacco control programs had been achieved in 2019, the largest decrease in the number of new cervical cancer cases would have been observed, with 54,169 fewer new cases of cervical cancer in 2019.

CONCLUSIONS

Our counterfactual analysis found that a comprehensive intervention program emphasizing scaled-up cervical screening coverage (70%), HPV vaccination coverage (90%), and tobacco control (30% relative reduction) would be the most effective program for reducing cervical cancer incidence.

Summary

Key Message
A comprehensive intervention program emphasizing scaled-up cervical screening coverage (70%), HPV vaccination coverage (90%), and tobacco control (30% relative reduction) would be the most effective program for reducing cervical cancer incidence in our counterfactual analysis.

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Determinants of cervical cancer incidence and mortality: A study on WHO countries
Ferdane Betul Bolukbasi, Bayram Sahin
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Trends in breast cancer screening rates among Korean women: results from the Korean National Cancer Screening Survey, 2005-2020: Soo Yeon Song, Yun Yeong Lee, Hye Young Shin, Bomi Park, Mina Suh, Kui Son Choi, Jae Kwan Jun; Epidemiol Health. 2022;44:e2022111. Published online November 24, 2022; DOI: https://doi.org/10.4178/epih.e2022111

19,629 View
184 Download
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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Since 2002, the Korean government has provided breast cancer screening as part of the National Cancer Screening Program. This study reported trends in the screening rate among Korean women from 2005 to 2020, including organized and opportunistic screening for breast cancer.

METHODS

Data from the Korean National Cancer Screening Survey, an annual cross-sectional nationwide survey, were collected using a structured questionnaire between 2005 and 2020. The study population included 23,702 women aged 40-74 years with no history of cancer. We estimated the screening rate based on the current recommendation of biennial mammographic screening for breast cancer. In addition, a joinpoint trend analysis was performed for breast cancer screening rates among various subgroups.

RESULTS

In 2020, the breast cancer screening rate was 63.5%, reflecting an annual increase of 7.72% (95% confidence interval 5.53 to 9.95) between 2005 and 2012, followed by non-significant trends thereafter. In particular, a significant decrease in the breast cancer screening rate was observed in the subgroups aged 50-59 years old, with 12-15 years of education, and living in rural areas.

CONCLUSIONS

Although there has been substantial improvement in breast cancer screening rates in Korean women, the trend has flattened in recent years. Therefore, continual efforts are required to identify subgroups with unmet needs and solve barriers to the uptake of breast cancer screening.

Summary

Korean summary
본 연구는 2005년에서 2020년까지 암검진수검행태조사 자료를 이용하여 40세 이상의 우리나라 여성의 유방암 검진 수검률이 추이에 대해 분석하였다. 우리나라 유방암 검진 수검률은 2020년 현재 63.5%이다. 하지만 지속적으로 증가하던 유방암 검진 수검률의 추이는 2012년 이후 정체되어 있으며 일부 사회경제적 계층에서는 감소하는 경향을 보였다.

Key Message
In Korea, despite of the high level of breast cancer screening rate, decreasing trends in some socioeconomic classes after 2012. Continual efforts are required to identify subgroup with unmet needs and barriers to the uptake of breast cancer screening.

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Gastric cancer risk is reduced by a predominance of antioxidant factors in the oxidative balance: a hospital-based case-control study in Korea: Jimi Kim, Jeonghee Lee, Il Ju Choi, Young-Il Kim, Jeongseon Kim; Epidemiol Health. 2022;44:e2022089. Published online October 17, 2022; DOI: https://doi.org/10.4178/epih.e2022089

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Gastric carcinogenesis is linked to oxidative stress from both exogenous and endogenous exposures. This study aimed to determine the association between the risk of gastric cancer and the oxidative balance score (OBS), which comprises antioxidant and pro-oxidant factors, including diet and lifestyle.

METHODS

For this hospital-based case-control study, 808 controls and 404 patients with gastric cancer who had clinical records indicating Helicobacter pylori infection and the histological subtype of cancer were recruited. The OBS was determined based on diet and lifestyle factors obtained from a 106-item semiquantitative food frequency questionnaire and a constructed questionnaire. Logistic regression analysis was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs).

RESULTS

A higher OBS was associated with a reduced gastric cancer risk (OR, 0.49; 95% CI T3 vs. T1, 0.33 to 0.71; p for trend <0.001). In a subgroup analysis, antioxidant factors showed inverse associations with gastric cancer risk (OR, 0.53; 95% CI T3 vs. T1, 0.35 to 0.79; p for trend=0.003). A stronger association with antioxidant factors was observed in patients with intestinal gastric cancer (OR, 0.34; 95% CI T3 vs. T1, 0.19 to 0.62; p for trend<0.001) and those with H. pylori infection (OR, 0.57; 95% CI T3 vs. T1, 0.37 to 0.88; p for trend=0.014).

CONCLUSIONS

A predominance of antioxidant factors compared to pro-oxidant factors from diet and lifestyle reduced the risk of gastric cancer. The combined effect of oxidative stress, which involves an altered balance between antioxidants and pro-oxidants, is important for modulating the risk of gastric cancer.

Summary

Korean summary
본 연구에서는 한국인 암 발생의 상위권을 차지하는 위암 발병률에 대해 영양소, 식품, 생활습관 등 항산화와 산화촉진 요인으로 구성된 산화 균형 점수(Oxidative Balance Score)와의 연관성을 비교 분석하였습니다. 산화촉진 요인에 비해 항산화 관련 요인에서 위암 발생의 위험이 유의하게 감소함을 나타냈습니다.

Key Message
The aim of this study was to determine the association between the risk of gastric cancer and the oxidative balance score comprising antioxidant and pro-oxidants factors, including diet and lifestyle. We found that predominantly antioxidants from diet and lifestyle, in contrast to pro-oxidants, reduce the risk of gastric cancer.

Citations

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The association between oxidative balance score and gallstones in adults: a population-based study
Yuxiao Yang, Jia Wang, Yuan Liu, Jiali Yu, Guanyu Chen, Shiyu Du
Frontiers in Nutrition.2025;[Epub] CrossRef
Associations between oxidation balance score and abdominal aortic calcification, and the mediating role of glycohemoglobin: a nationally representative cross-sectional study from NHANES
Heqian Liu, Yifei Wu, Zhenyu Liu, Hongzhi Ren, Ya Wu, Yong Liu
Frontiers in Nutrition.2025;[Epub] CrossRef
Mechanistic study on the effects of acerola cherry concentrate on LPS-induced IEC-6 cell injury and Vinorelbine-induced immune function damage in zebrafish
Huilin Zhu, Dingli Wang, Jindan Han, Ling Tong, Yanqing Li, Cuifeng Cao, Lalai Zikela, Zhuoli Yu, Xinyao Li, Hui Zhou, Songtao Li, Libing Chen, Qiang Han
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Association between oxidative balance score and prostate specific antigen among older US adults
Jintao Li, Chao Yang, Kui Xiang
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The systemic oxidative stress score has a prognostic value on gastric cancer patients undergoing surgery
Xinyu Wang, Limin Zhang
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Association of oxidative balance score with Helicobacter pylori infection and mortality among US population
Lei Peng, Yongping Sun, Zhenghui Zhu, Yuanyuan Li
European Journal of Nutrition.2024; 63(7): 2499. CrossRef
Correlations between oxidative balance score and female asthma among U.S. adults
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Association between oxidative balance scores and all-cause and cardiovascular disease-related mortality in patients with type 2 diabetes: data from the national health and nutrition examination survey (2007–2018)
Hao Wang, Yan-Lin Chen, Xiang-Ming Li, Qi Wu, Yan Xu, Jin-Song Xu
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Oxidative balance score and the potential for suffering rheumatoid arthritis: a cross-sectional study
Yimin Zhang, Hao Yu, Jianfei Fu, Renjie Zhuo, Jin Xu, Liya Liu, Manyun Dai, Zhen Li
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Guiming Deng, Hao Sun, Rong Huang, Hongming Pan, Yanjiao Zuo, Ruihu Zhao, Zhongze Du, Yingwei Xue, Hongjiang Song
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Motahareh Hasani, Seyedeh Parisa Alinia, Maryam Khazdouz, Sahar Sobhani, Parham Mardi, Hanieh-Sadat Ejtahed, Mostafa Qorbani
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The risk of gastric cancer according to changes in smoking status among Korean men: Sung Keun Park, Min-Ho Kim, Chang-Mo Oh, Eunhee Ha, Eun Hye Yang, Woo Yeon Hwang, Ann Hee You, Jae-Hong Ryoo; Epidemiol Health. 2022;44:e2022086. Published online October 7, 2022; DOI: https://doi.org/10.4178/epih.e2022086

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Abstract Summary PDF

Abstract

OBJECTIVES
Smoking is a risk factor for gastric cancer. Studies have shown that the risk of gastric cancer can vary by smoking status and smoking amount at a single point in time. However, few data have been reported about the effect of changes in smoking status over time on the risk of gastric cancer.

METHODS

This study collected data from the National Health Insurance Corporation in Korea on 97,700 Korean men without gastric cancer who underwent health check-ups from 2002 to 2013. The smoking status (never smoked, quit smoking, and currently smoking) of study participants was assessed in 2003-2004 and 2009, and the results were categorized into 7 groups: never-never, never-quit, never-current, quit-quit, quit-current, current-quit, and current-current. Participants were followed until 2013 to identify incident gastric cancer. A multivariate Cox proportional hazard model was used to calculate adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for incident gastric cancer according to changes in smoking status and smoking amount (pack-years).

RESULTS

Compared with group 1 (never-never), participants currently smoking in 2009 (never-current, quit-current, and current-current) had higher HRs for gastric cancer (never-quit: 1.077; 95% CI, 0.887 to 1.306, never-current: 1.347; 95% CI, 0.983 to1.846, quit-quit: 1.086; 95% CI, 0.863 to 1.366, quit-current: 1.538; 95% CI, 1.042 to 2.269, current-quit: 1.339; 95% CI, 1.077 to 1.666, and current-current: 1.589; 95% CI, 1.355 to 1.864, respectively). The risk for gastric cancer was highest in heavy smokers, followed by moderate smokers.

CONCLUSIONS

In all categories of smoking status, current smoking was associated with the highest risk of gastric cancer. Heavy smoking was associated with an increased risk of gastric cancer, even in former smokers.

Summary

Korean summary
현재 흡연자의 경우 과거 흡연여부와 관계 없이 위암의 위험성이 가장 증가한다. 과거 흡연자의 경우에는 흡연량이 많은 경우에는 위암의 위험성이 증가한다. 이런 결과는 금연이나 흡연량을 줄이는 것이 위암의 위험성을 감소시키는데 매우 중요한 요인이란 것을 확인할 수 있다.

Key Message
Current smoking was associated with an increased risk of gastric cancer, regardless of previous smoking status. Although former smoking was not associated with an increased risk of gastric cancer, former smokers with a history of heavy smoking had an increased risk of gastric cancer. These results suggest that smoking cessation and reducing smoking amounts are both important factors in reducing the risk of gastric cancer.

Citations

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Current Understanding of Optimal Prevention of Helicobacter pylori-Induced Cancer
Adesola Oje, Jonathan Galati, Richard M. Peek
Gastroenterology Clinics of North America.2025; 54(2): 397. CrossRef
Impact of smoking and opium cessation on gastrointestinal cancer risk: A 15-year longitudinal study in Golestan Cohort
Masoume Mansouri, Ali Sheidaei, Hossein Poustchi, Gholamreza Roshandel, Reza Malekzadeh, Akram Pourshams, Sadaf G. Sepanlou
Scientific Reports.2025;[Epub] CrossRef
Gastroesophageal disease risk and inhalational exposure a systematic review and meta-analysis
Daniel Hyun Kim, Sanjiti Podury, Aida Fallah Zadeh, Tara Mahmoodi, Sophia Kwon, Gabriele Grunig, Mengling Liu, Anna Nolan
Scientific Reports.2025;[Epub] CrossRef
Association between smoking cessation and recurrence of gastric cancer: A retrospective study based on the National Health and Nutrition Examination Surveys (NHANES) 1999-2018
Yonglin Li, Yanhong Liang
Innovative Healthcare in Medicine and Nursing.2025; 1(1): 12. CrossRef
ATR-CHK1 Axis Inhibitors in Gastric Cancer Treatment
Mateusz Kciuk, Renata Gruszka, Marta Aleksandrowicz, Agnieszka Śliwińska, Renata Kontek
International Journal of Molecular Sciences.2025; 26(16): 7709. CrossRef
Gastric dysplasia in random biopsies: the influence of Helicobacter pylori infection and alcohol consumption in the presence of a lesion
Ana Isabel Ferreira, Tiago Lima Capela, Vítor Macedo Silva, Sofia Xavier, Pedro Boal Carvalho, Joana Magalhães, José Cotter
Scandinavian Journal of Gastroenterology.2024; 59(2): 125. CrossRef
Lifestyle Behaviors in Patients With Gastric Cancer: Continuous Need for Alcohol Abstinence and Muscle Strength Training Education
Ji Won Seo, Kyu Na Lee, Kyung Do Han, Ki Bum Park
Journal of Gastric Cancer.2024; 24(3): 316. CrossRef
Gastric cancer—Epidemiology, modifiable and non-modifiable risk factors, challenges and opportunities: An updated review
Tajul Islam Mamun, Sabrina Younus, Md. Hashibur Rahman
Cancer Treatment and Research Communications.2024; 41: 100845. CrossRef

Association of the inflammatory balance of diet and lifestyle with colorectal cancer among Korean adults: a case-control study: Shinyoung Jun, Jeonghee Lee, Jae Hwan Oh, Hee Jin Chang, Dae Kyung Sohn, Aesun Shin, Jeongseon Kim; Epidemiol Health. 2022;44:e2022084. Published online September 30, 2022; DOI: https://doi.org/10.4178/epih.e2022084

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Dietary and lifestyle exposures may affect the risk of colorectal cancer (CRC) by promoting chronic inflammation. Therefore, we assessed the separate and joint associations of dietary and lifestyle inflammation scores (DIS and LIS, respectively) with CRC.

METHODS

Data from 919 pathologically confirmed CRC cases and 1,846 age- and sex-matched controls recruited at the National Cancer Center Korea were analyzed. We calculated the DIS and LIS, which characterize the collective contributions of 19 dietary and 4 lifestyle factors, respectively, to systemic inflammation by applying weights based on high-sensitivity C-reactive protein. A higher score represented a higher balance of pro- to anti-inflammatory exposures. Unconditional logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for CRC risk compared across the DIS and LIS tertile categories, with the lowest tertile as the reference group.

RESULTS

The highest DIS tertile had significantly increased odds of having CRC (OR, 2.65; 95% CI, 2.10 to 3.36), and the odds increased with increasing DIS. The highest LIS tertile group had 1.28-fold higher odds of having CRC (95% CI, 1.03 to 1.58). In the cross-classification analysis, the odds of having CRC increased as the DIS and LIS jointly increased until the DIS reached the highest tertile, where the risk was very high (3-fold or more) regardless of the LIS.

CONCLUSIONS

In conclusion, a higher balance of pro-inflammatory relative to anti-inflammatory dietary and lifestyle factors, especially dietary factors, was associated with higher CRC risk among Korean adults.

Summary

Korean summary
본 연구는 국립암센터에서 수집한 대장암 환자-대조군 데이터를 활용하여, 새롭게 개발된 식이 염증 지수(Dietary Inflammation Score, DIS) 및 생활습관 염증 지수(Lifestyle Inflammation Score, LIS)와 대장암 발생 위험 간의 연관성을 탐색하였다. 분석 결과, 식이 염증 지수 혹은 생활습관 염증 지수가 높은 집단에서 대장암 위험이 더 높아, 식이와 생활습관이 체내 염증 수준을 높여 대장암 발생 위험을 높일 가능성이 제기되었다

Key Message
Dietary inflammation score (DIS) and lifestyle inflammation score (LIS) quantify the collective effect of dietary and lifestyle factors, respectively, on systemic inflammation. In this case-control study, we assessed the associations of DIS and LIS with colorectal cancer risk among Korean adults. Our results suggest that a higher balance of pro-to anti-inflammatory dietary and lifestyle factors may be associated with higher risk for colorectal cancer. The findings from our study support that reducing inflammation through dietary or lifestyle changes could potentially reduce the risk for colorectal cancer.

Citations

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Performance of cohort-adapted dietary and lifestyle inflammation scores among Hispanic adults
Lisa C. Merrill, Sabrina E. Noel, Rafael López Martínez, Josiemer Mattei, Natalia Palacios, Yan Wang, Katherine L. Tucker, Kelsey M. Mangano
Frontiers in Nutrition.2026;[Epub] CrossRef
Colorectal Cancer Risk in Korean Patients with Inflammatory Bowel Disease: A Nationwide Big Data Study of Subtype and Socioeconomic Disparities
Kyeong Min Han, Ho Suk Kang, Joo-Hee Kim, Hyo Geun Choi, Dae Myoung Yoo, Nan Young Kim, Ha Young Park, Mi Jung Kwon
Journal of Clinical Medicine.2025; 14(15): 5503. CrossRef
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The association of diet-dependent acid load with colorectal cancer risk: a case–control study in Korea
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British Journal of Nutrition.2024; 131(2): 333. CrossRef
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Prediction of cancer survivors’ mortality risk in Korea: a 25-year nationwide prospective cohort study: Yeun Soo Yang, Heejin Kimm, Keum Ji Jung, Seulji Moon, Sunmi Lee, Sun Ha Jee; Epidemiol Health. 2022;44:e2022075. Published online September 13, 2022; DOI: https://doi.org/10.4178/epih.e2022075

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
This study aimed to investigate the factors affecting cancer survival and develop a mortality prediction model for Korean cancer survivors. Our study identified lifestyle and mortality risk factors and attempted to determine whether health-promoting lifestyles affect mortality.

METHODS

Among the 1,637,287 participants in the Korean Cancer Prevention Study (KCPS) cohort, 200,834 cancer survivors who were alive after cancer diagnosis were analyzed. Discrimination and calibration for predicting the 10-year mortality risk were evaluated. A prediction model was derived using the Cox model coefficients, mean risk factor values, and mean mortality from the cancer survivors in the KCPS cohort.

RESULTS

During the 21.6-year follow-up, the all-cause mortality rates of cancer survivors were 57.2% and 39.4% in men and women, respectively. Men, older age, current smoking, and a history of diabetes were high-risk factors for mortality, while exercise habits and a family history of cancer were associated with reduced risk. The prediction model discrimination in the validation dataset for both KCPS all-cause mortality and KCPS cancer mortality was shown by C-statistics of 0.69 and 0.68, respectively. Based on the constructed prediction models, when we modified exercise status and smoking status, as modifiable factors, the cancer survivors’ risk of mortality decreased linearly.

CONCLUSIONS

A mortality prediction model for cancer survivors was developed that may be helpful in supporting a healthy life. Lifestyle modifications in cancer survivors may affect their risk of mortality in the future.

Summary

Korean summary
현재 암 생존자의 사망 위험을 평가하는 데 유용한 한국형 암 생존자 사망률 예측 모델은 없습니다. 본 연구에서는 고령, 남성, 현재 흡연, 당뇨병 병력을 포함한 생활양식 요인이 사망의 고위험 요인인 반면, 운동 습관 및 암의 가족력은 사망 위험을 감소시키는 것으로 나타났습니다. 현재 흡연과 운동 습관은 사망 위험에 영향을 미치는 수정 가능한 두 가지 요소로써, 이러한 생활습관 요인으로 구성된 예측모형은 생활습관 교정을 통해 우리나라 암 생존자의 사망률을 낮출 수 있음을 시사합니다.

Key Message
Currently, there is no Korean mortality prediction model for cancer survivors that would be useful in evaluating their risk of mortality. The present study showed that lifestyle factors, including older age, male sex, current smoking, and history of diabetes were high-risk factors for mortality, while exercise habits and a family history of cancer reduced the risk of mortality. Current smoking and exercise habits are the two modifiable factors that affected the risk of mortality. The prediction model comprising these lifestyle factors implies that the risk of mortality of cancer survivors in Korea can be reduced through lifestyle modification.

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Effect of Pap smears on the long-term survival of cervical cancer patients: a nationwide population-based cohort study in Korea: Xuan Quy Luu, Kyeongmin Lee, Jae Kwan Jun, Mina Suh, kyu-won Jung, Myong Cheol Lim, Kui Son Choi; Epidemiol Health. 2022;44:e2022072. Published online September 7, 2022; DOI: https://doi.org/10.4178/epih.e2022072

18,971 View
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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
This study aimed to investigate the effect of cervical cancer screening by Papanicolaou (Pap) smears on the long-term survival of cervical cancer patients.

METHODS

We constructed a retrospective cohort of 14,903 women diagnosed with invasive cancer or carcinoma in situ in 2008 and 2009 and followed up until December 31, 2019, by using individual-level data from 3 national databases of the Korean National Cancer Screening Program, the Korean Central Cancer Registry, and death certificates. Cox proportional-hazards regression was used to investigate the effect of cervical cancer screening on mortality.

RESULTS

In total, 12,987 out of 14,867 patients (87.4%) were alive at the end of the follow-up period (median: 10.5 years). Screened patients had a 38% lower risk of cervical cancer death than never-screened patients (hazard ratio [HR], 0.62; 95% confidence interval [CI], 0.54 to 0.70). Screening was associated with 59% and 35% lower risks of death, respectively, in screened patients with localized and regional stages. Furthermore, lower HRs among women who received screening were observed in all age groups, especially women aged 50–59 years (HR, 0.54; 95% CI, 0.42 to 0.69). The lowest HR for cervical cancer death was reported among patients screened within the past 2 years (HR, 0.54; 95% CI, 0.47 to 0.63), and the HRs increased with increasing time intervals.

CONCLUSIONS

Pap smear screening significantly reduced the risk of cervical cancer-specific death in Korean women across all cancer stages.

Summary

Korean summary
한국은 자궁경부암 발생과 사망을 낮추기 위하여 국가암검진사업으로 자궁경부암 검진을 실시하고 있다. 이 연구는 2008-2009년 자궁경부암 진단을 받은 30세-79세 14,903명을 대상으로 과거 자궁경부세포검진 여부에 따른 장기생존율을 추적 조사하였다. 그 결과 자궁경부암 검진을 받은 환자에서 사망 위험비가 약 38% 낮았으며, 2년 이내에 검진을 받은 환자군에서 사망 위험이 가장 낮았다.

Key Message
The Korean National Cancer Screening Program (KNCSP) has provided cervical cancer screening by Pap smear test. However, the survival, particularly long-term survival of cervical cancer patients, has never been evaluated in the KNCSP. This study reports a significant improvement in the long-term survival of screened cervical cancer patients, which persist in subgroup analysis by cancer stage. Patients who were screened within two years before the diagnosis had the best survival.

Citations

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Association between screening history and prognosis of cervical carcinoma in situ and invasive cervical cancer: A population-based cohort study
Chiung-Shuan Huang, Bo-Yu Hsiao, Mei-Hsuan Wu, Chun-Ju Chiang, Pei-Chun Hsieh, Mei-Ju Chen, Wen-Fang Cheng, Wen-Chung Lee
Annals of Epidemiology.2025; 106: 75. CrossRef
Age and socioeconomic disparities in cervical cancer incidence and mortality: a SEER-based analysis
Yuyi Ou, Santosh Chokkakula, Sio Mui Chong, Hao Wang, Andrew In-Cheong Si, Yong Jiang, Liying Huang, Xiaohua Xu, Chengliang Yin, Jun Lyu, Xiaobin Huang, Hui-ling Shang
Frontiers in Public Health.2025;[Epub] CrossRef
Current Status of the National Cancer Screening Program in Korea: History, Achievements, and Future Directions
Kyeongmin Lee, Mina Suh, Kui Son Choi
Journal of Preventive Medicine and Public Health.2025; 58(4): 337. CrossRef
The significance of uterine artery embolization in the treatment of utero‐cervical cancer: A single case report
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Time to death from cervical cancer and its predictors in hospitalized patients: a survival approach study in Mato Grosso, Brazil
Sancho Pedro Xavier, Kátia Moreira da Silva, Noemi Dreyer Galvão, Marco Aurélio Bertúlio das Neves, Adila de Queiroz Neves Almeida, Ageo Mario Cândido da Silva
World Journal of Surgical Oncology.2024;[Epub] CrossRef

Awareness of and practice toward cancer prevention recommendations: results of the Korean National Cancer Prevention Awareness and Practice Survey in 2021: Jin-Kyoung Oh, Eunjung Park, Byungmi Kim, Yoon-Jung Choi, E Hwa Yun, Min Kyung Lim, Jeong-Soo Im, Eun Young Park; Epidemiol Health. 2022;44:e2022068. Published online August 26, 2022; DOI: https://doi.org/10.4178/epih.e2022068

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Abstract

OBJECTIVES
This study reports data regarding the awareness and practice of cancer prevention among Koreans in 2021 and behavioral changes during the coronavirus disease 2019 (COVID-19) pandemic.

METHODS

We collected Cancer Prevention Awareness and Practice Survey data through face-to-face interview surveys using a structured questionnaire completed by 4,000 randomly selected men and women aged between 20 years and 74 years in 17 provinces. We examined the awareness and practice of 10 cancer prevention recommendations and evaluated their associations with potential risk factors through multiple logistic regression analysis adjusted for age, gender, residence, marital status, education, and income.

RESULTS

Eighty percent of participants knew that cancer is preventable, while 45% practiced cancer prevention. Cancer prevention practice tended to be more common among older participants (adjusted odds ratio [aOR], 1.39 per 10-year increment; 95% confidence interval [CI], 1.29 to 1.49) and less common among rural inhabitants (aOR, 0.66; 95% CI, 0.51 to 0.86) than among urban residents and among single people (aOR, 0.55; 95% CI, 0.45 to 0.66) than among married people. Practices were the highest for avoiding burned or charred foods (87.6%) and lowest for vaccination against human papillomavirus (14.5%). Refusal to follow recommendations was most common for avoiding alcohol consumption (7.9%). The most difficult recommendations to follow were (1) regular exercise (57.7%); (2) maintaining a healthy body weight (46.1%); and (3) avoiding alcohol (40.1%). The most significant COVID-19-related changes were less exercise (32.5%) and increased body weight (25.6%).

CONCLUSIONS

The awareness of cancer prevention was high, but the practice was low. Recommendations targeting awareness and practice need to be further promoted.

Summary

Korean summary
2021년 국민 암예방 인식 및 실천행태 조사에 따르면, 국민의 80%는 암이 예방 가능하다는 사실을 알고 있으나, 45%만이 암예방을 위한 건강생활을 실천하고 있음. 암예방수칙 중 가장 지키기 어려운 항목으로는 ‘운동하기’(57.7%)를 꼽았고, 그 다음으로 ‘건강체중 유지하기’(46.1%)와 ‘소량음주도 피하기’(40.1%)순으로 나타났음. 코로나19 유행으로 인한 가장 흔한 변화는 운동 감소(32.5%)와 체중 증가(25.6%)로 나타났음.

Key Message
According to the data collected from the Cancer Prevention Awareness and Practice Survey in 2021, 80% of participants knew that cancer is preventable, while 45% practiced cancer prevention. The most difficult recommendations to follow were (1) regular exercise (57.7%); (2) maintaining a healthy body weight (46.1%); and (3) avoiding alcohol (40.1%). The most significant COVID-19-related changes were less exercise (32.5%) and increased body weight (25.6%).

Citations

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A comparative study of health behaviors in adult male cancer survivors and the general male population in Korea: from the Korea national health and nutrition examination survey VII-VIII (2016–2021)
Hyein Jung, Yoonjoo Choi, Byungmi Kim
Supportive Care in Cancer.2025;[Epub] CrossRef
Gender differences in awareness and practices of cancer prevention recommendations in Korea: a cross-sectional survey
Yoonjoo Choi, Naeun Kim, Jin-Kyoung Oh, Yoon-Jung Choi, Bohyun Park, Byungmi Kim
Epidemiology and Health.2025; 47: e2025003. CrossRef
Longitudinal assessment of smoking‐related knowledge, attitude, and practice for cancer prevention: an analysis of data from the Korean National Cancer Prevention Awareness and Practice Survey
Jeoung A Kwon, Naeun Kim, Jin-Kyoung Oh, Bohyun Park, Yoon-Jung Choi, Yoonjoo Choi, Byungmi Kim
BMC Public Health.2025;[Epub] CrossRef
Awareness and Practice of Global Cancer Prevention Dietary Guidelines among Koreans
Ahyoung Yun, Yoonjoo Choi, Hyein Jung, Byungmi Kim
Journal of Cancer Prevention.2025; 30(1): 32. CrossRef
Socioeconomic Inequalities in Intention to Quit Smoking Plan Among Korean Adults, 2016–2021
Sunhee Park, Jeoung A Kwon, Byungmi Kim, Naeun Kim, Yejin Ha, Mark Parascandola, YoonJoo Choi
Tobacco Use Insights.2025;[Epub] CrossRef
The Korean National Codes Against Cancer: background of their establishment and the revision process
Yoonjoo Choi, Jin-Kyoung Oh, Ayoung Byeon, Byungmi Kim
Epidemiology and Health.2025; 47: e2025027. CrossRef
Risk Factors of Gastric Cancer and Lifestyle Modification for Prevention
Kwang-Pil Ko
Journal of Gastric Cancer.2024; 24(1): 99. CrossRef
Factors Affecting Adherence to National Colorectal Cancer Screening: A 12-Year Longitudinal Study Using Multi-Institutional Pooled Data in Korea
Dae Sung Kim, Jeeyoung Hong, Kihyun Ryu, Sang Hyuk Lee, Hwanhyi Cho, Jehyeong Yu, Jieun Lee, Jong-Yeup Kim
Journal of Korean Medical Science.2024;[Epub] CrossRef
Imposing stragies for health promotion fund for alcohol
Kwang Wook Koh, Hye Sook Kim, Seong Hyun Koh
Korean Journal of Health Education and Promotion.2023; 40(4): 45. CrossRef
Cancer risk based on alcohol consumption levels: a comprehensive systematic review and meta-analysis
Seunghee Jun, Hyunjin Park, Ui-Jeong Kim, Eun Jeong Choi, Hye Ah Lee, Bomi Park, Soon Young Lee, Sun Ha Jee, Hyesook Park
Epidemiology and Health.2023; 45: e2023092. CrossRef

Income-based disparities in the risk of distant-stage cervical cancer and 5-year mortality after the introduction of a National Cancer Screening Program in Korea: Erdenetuya Bolormaa, Seung-Ah Choe, Mia Son, Myung Ki, Domyung Paek; Epidemiol Health. 2022;44:e2022066. Published online August 11, 2022; DOI: https://doi.org/10.4178/epih.e2022066

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Abstract

OBJECTIVES
This study assessed the socioeconomic gradient in the risk of distant-stage cervical cancer (CC) at presentation and 5-year mortality for new CC patients after the introduction of a national Cancer Screening Program (NCSP) in Korea.

METHODS

All new CC cases from 2007 to 2017 were retrieved from the Korea Central Cancer Registry database linked with the National Health Information Database of the National Health Insurance Service. The age-standardized cumulative incidence of CC, adjusted odds ratios (ORs) of distant metastasis at presentation, and adjusted all-cause mortality hazard ratios (HRs) within 5 years post-diagnosis were assessed according to the income gradient.

RESULTS

The 11-year age-standardized cumulative incidence of CC ranged from 48.9 to 381.5 per 100,000 women, with the richest quintile having the highest incidence. Of 31,391 new cases, 8.6% had distant metastasis on presentation, which was most frequent among Medical Aid beneficiaries (9.9%). Distant-stage CC was more likely when the income level was lower (OR, 1.46; 95% confidence interval [CI]), 1.28 to 1.67 for the lowest compared to the richest) and among Medical Aid beneficiaries (OR, 1.50; 95% CI, 1.24 to 1.82). The 5-year mortality was greater in the lower-income quintiles and Medical Aid beneficiaries than in the richest quintile.

CONCLUSIONS

The incidence of CC was higher in the richest quintile than in the lower income quintiles, while the risk of distant-stage CC and mortality was higher for women in lower income quintiles in the context of the NCSP. A more focused approach is needed to further alleviate disparities in the timely diagnosis and treatment of CC.

Summary

Korean summary
새로이 자궁경부암을 진단받은 여성에서 소득수준에 따른 진단시 원격 전이가 있을 위험도와 진단 이후 5년 사망위험도를 연령과 체질량 지수등의 개인 수준의 위험 요인을 보정하여 구했다. 소득 수준이 낮을수록, 의료급여 환자일수록 진단시 원격 전이가 있을 위험과 5년 내 사망 위험이 높은 것으로 나타났다. 자궁경부암에 대한 전국민 대상 선별 검사가 있지만 여전히 소득 수준에 따른 자궁경부암의 적시 진단과 진단 후 생존의 불평등이 남아 있으며 이에 대한 추가 정책이 필요하다.

Key Message
This study adds empirical evidence for an income-based disparity in the cancer stage at presentation and five-year survival among cervical cancer patients even in the presence of a universal screening program.

Citations

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Nomogram model for predicting the long-term prognosis of cervical cancer patients: a population-based study in Mato Grosso, Brazil
Sancho Pedro Xavier, Noemi Dreyer Galvão, Marco Aurélio Bertúlio das Neves, Kátia Moreira da Silva, Adila de Queiroz Neves Almeida, Ageo Mario Cândido da Silva
BMC Cancer.2025;[Epub] CrossRef
Individual and community-level determinants of cervical cancer screening among Kenyan women: a multilevel analysis of a Kenya demographic and health surveys 2022
Beminate Lemma Seifu, Angwach Abrham Asnake, Teshale Belayneh, Tesfahun Hailemariam
BMC Cancer.2025;[Epub] CrossRef
Age and socioeconomic disparities in cervical cancer incidence and mortality: a SEER-based analysis
Yuyi Ou, Santosh Chokkakula, Sio Mui Chong, Hao Wang, Andrew In-Cheong Si, Yong Jiang, Liying Huang, Xiaohua Xu, Chengliang Yin, Jun Lyu, Xiaobin Huang, Hui-ling Shang
Frontiers in Public Health.2025;[Epub] CrossRef
Individual and joint effect of socioeconomic status and lifestyle factors on cancer in Korea
Chi Lan Tran, Kui Son Choi, Sun‐Young Kim, Jin‐Kyoung Oh
Cancer Medicine.2023; 12(16): 17389. CrossRef
Menopausal hormone therapy and risk of dementia: health insurance database in South Korea-based retrospective cohort study
Jin-Sung Yuk, Jin San Lee, Joong Hyun Park
Frontiers in Aging Neuroscience.2023;[Epub] CrossRef
Disparities in Cancer Incidence across Income Levels in South Korea
Su-Min Jeong, Kyu-Won Jung, Juwon Park, Nayeon Kim, Dong Wook Shin, Mina Suh
Cancers.2023; 15(24): 5898. CrossRef

The impact of COVID-19 on cancer care in a tertiary hospital in Korea: possible collateral damage to emergency care: Shin Hye Yoo, Jin-Ah Sim, Jeongmi Shin, Bhumsuk Keam, Jun-Bean Park, Aesun Shin; Epidemiol Health. 2022;44:e2022044. Published online May 1, 2022; DOI: https://doi.org/10.4178/epih.e2022044

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Abstract

OBJECTIVES
We investigated the impact of the COVID-19 pandemic on cancer care in a tertiary hospital in Korea without specific lockdown measures.

METHODS

A retrospective cohort of cancer patients from one of the largest tertiary hospitals in Korea was used to compare healthcare utilization in different settings (outpatient cancer clinic, the emergency department [ED], and admissions to the hematology/oncology ward) between January 1 and December 31, 2020 and the same time period in 2019. The percent changes in healthcare utilization between the 2 periods were calculated.

RESULTS

A total of 448,833 cases from the outpatient cohort, 26,781 cases from the ED cohort, and 14,513 cases from the admission cohort were reviewed for 2019 and 2020. The total number of ED visit cases significantly decreased from 2019 to 2020 by 18.04%, whereas the proportion of cancer patients remained stable. The reduction in ED visits was more prominent in patients with symptoms suspicious for COVID-19, high-acuity cases, and those who lived in non-capital city areas. There were no significant changes in the number of total visits, new cases in the outpatient clinic, or the total number of hospitalizations between the 2 periods.

CONCLUSIONS

During the pandemic, the number of ED visits significantly decreased, while the use of the outpatient clinic and hospitalizations were not affected. Cancer patients’ ED visits decreased after the COVID-19 outbreak, suggesting the potential for collateral damage outside the hospital if patients cannot reach the ED in a timely manner.

Summary

Korean summary
코로나19 이전인 2019년에 비해 코로나19 유행 첫 해인 2020년에 암환자의 1개 상급종합병원 응급실 방문이 유의하게 감소하였고, 특히 코로나19 의심 증상이 있거나, 중증도가 높거나, 비수도권 지역에 거주하는 환자에서 응급실 방문의 감소가 뚜렷하였다. 코로나19 이전과 코로나19 유행 시 외래 방문 암환자의 수, 신환 수는 큰 차이가 없었고, 입원한 암환자의 수 역시 유의한 차이가 없었다. 코로나19 대유행 시 암환자의 응급실 방문 감소는 병원 밖에서 적시에 응급실에 방문하지 못하는 부수적 피해의 가능성을 시사하여, 이에 대한 관심이 필요하다.

Key Message
The study identified a significant decrease in the emergency department visits of the cancer patients at a tertiary hospital in Korea during the COVID-19 pandemic. There were no significant changes in the number of total visits, new cases in the outpatient clinic, or the total number of hospitalizations between pre-COVID-19 and during-COVID-19 periods.

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Tailored proton beam therapy for hepatocellular carcinoma: Addressing unmet needs through a multidisciplinary approach
Jeong Ha Lee, Nalee Kim, Jeong Il Yu, Hee Chul Park, Sungkoo Cho, Byeong Geun Song, Myung Ji Goh, Wonseok Kang, Dong Hyun Sinn, Geum-Youn Gwak, Joon Hyeok Lee, Yong-Han Paik, Moon Seok Choi, Minsuk Kwon, Jung Yong Hong, Gyu-Seong Choi, Woo Kyoung Jeong, M
European Journal of Cancer.2026; 237: 116593. CrossRef
Cancer care disruptions among vulnerable populations during the COVID-19 pandemic: A scoping review
Gyeong-Min Lee, Seokjin Yun, Yool-Won Jung, Jae-Hyun Kim, Yoo-Mi Chae
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Impact of the COVID-19 Pandemic on Hemato-Oncology Services: A Retrospective Dual-Center Cohort Study in Kazakhstan
Maral Yerdenova, Aigulsum Izekenova, Akbope Myrkassymova, Gaukhar Mergenova, Mohammed Merzah, Balday Issenova, Maksat Mamyrkul, Aliya Atabayeva, Vytenis Kalibatas, Dejan Nikolic, Yineng Chen
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The association of pancreatic cancer incidence with smoking status and smoking amount in Korean men: Do Jin Nam, Chang-Mo Oh, Eunhee Ha, Min-Ho Kim, Eun Hye Yang, Hyo Choon Lee, Soon Su Shin, Woo Yeon Hwang, Ann Hee You, Jae-Hong Ryoo; Epidemiol Health. 2022;44:e2022040. Published online April 21, 2022; DOI: https://doi.org/10.4178/epih.e2022040

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Our study examined the dose-response relationship between smoking amounts (pack-years) and the risk of developing pancreatic cancer in Korean men.

METHODS

Of 125,743 participants who underwent medical health checkups in 2009, 121,408 were included in the final analysis and observed for the development of pancreatic cancer. We evaluated the associations between smoking amounts and incident pancreatic cancer in 4 groups classified by pack-year amounts. Cox proportional hazards models were used to estimate the adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) of incident pancreatic cancer by comparing groups 2 (<20 pack-year smokers), 3 (20-≤40 pack-year smokers), and 4 (>40 pack-year smokers) with group 1 (never smokers).

RESULTS

During 527,974.5 person-years of follow-up, 245 incident cases of pancreatic cancer developed between 2009 and 2013. The multivariate-adjusted HRs (95% CIs) for incident pancreatic cancer in groups 2, 3, and 4 were 1.05 (0.76 to 1.45), 1.28 (0.91 to 1.80), and 1.57 (1.00 to 2.46), respectively (p for trend=0.025). The HR (95% CI) of former smokers showed a dose-response relationship in the unadjusted model, but did not show a statistically significant association in the multivariate-adjusted model. The HR (95% CI) of current smokers showed a dose-response relationship in both the unadjusted (p for trend=0.020) and multivariate-adjusted models (p for trend=0.050).

CONCLUSIONS

The risk of developing pancreatic cancer was higher in current smokers status than in former smokers among Korean men, indicating that smoking cessation may have a protective effect.

Summary

Korean summary
본 연구에서는 대한민국 남성을 대상으로 흡연양 및 흡연상태에 따른 췌장암 발병을 분석하였다. 흡연양이 많을수록, 현재 흡연상태일수록 췌장암 발병이 높았고, 금연한 경우 췌장암의 발병이 낮은 것을 확인할 수 있었다.

Key Message
As a result of analyzing the incidence of pancreatic cancer according to the amount of smoking and smoking status among Korean men, it was confirmed that the more smoked and the current smoking status, the higher the incidence of pancreatic cancer, and the lower the incidence of pancreatic cancer when quitting smoking.

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Journal of Clinical Medicine.2025; 14(18): 6687. CrossRef
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Systematic Review

Quantifying the duration of the preclinical detectable phase in cancer screening: a systematic review: Sandra M. E. Geurts, Anne M. W. M. Aarts, André L. M. Verbeek, Tony H. H. Chen, Mireille J. M. Broeders, Stephen W. Duffy; Epidemiol Health. 2022;44:e2022008. Published online January 3, 2022; DOI: https://doi.org/10.4178/epih.e2022008

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
The aim of this study was to provide an overview of published mathematical estimation approaches to quantify the duration of the preclinical detectable phase (PCDP) using data from cancer screening programs.

METHODS

A systematic search of PubMed and Embase was conducted for original studies presenting mathematical approaches using screening data. The studies were categorized by mathematical approach, data source, and assumptions made. Furthermore, estimates of the duration of the PCDP of breast and colorectal cancer were reported per study population.

RESULTS

From 689 publications, 34 estimation methods were included. Five distinct types of mathematical estimation approaches were identified: prevalence-to-incidence ratio (n=8), maximum likelihood estimation (n=16), expectation-maximization algorithm (n=1), regression of observed on expected (n=6) and Bayesian Markov-chain Monte Carlo estimation (n=5). Fourteen studies used data from both screened and unscreened populations, whereas 19 studies included only information from a screened population. Estimates of the duration of the PCDP varied between 2 years and 7 years for breast cancer in the Health Insurance Plan study (annual mammography and clinical breast examinations in women aged 40-64 years) and 2 years and 5 years for colorectal cancer in the Calvados study (a guaiac fecal occult blood test in men and women aged 45-74 years).

CONCLUSIONS

Different types of mathematical approaches lead to different estimates of the PCDP duration. We advise researchers to use the method that matches the data available, and to use multiple methods for estimation when possible, since no method is perfect.

Summary

Key Message
Quantifying the duration of the preclinical detectable phase is important for the design and evaluation of cancer screening programs. Different types of mathematical estimation approaches lead to different estimates of the preclinical detectable phase duration. We advise researchers to use the method that matches the data available, and to use multiple methods for estimation when possible, since no method is perfect.

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Original Article

Effects of early medication treatment and metformin use for cancer prevention in diabetes patients: a nationwide sample cohort study in Korea using extended landmark time analysis: Hwa Jeong Seo, Hyun Sook Oh; Epidemiol Health. 2021;43:e2021103. Published online December 17, 2021; DOI: https://doi.org/10.4178/epih.e2021103

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
This study investigated the effectiveness of early medication treatment and metformin use for cancer prevention in type 2 diabetes patients.

METHODS

Population-based cohort data were used from the Korean National Health Insurance Service-National Sample Cohort database (KNHIS-NSC) for 2002-2013. Patient-specific medication prescription status was defined by the landmark time (LMT; a fixed time after cohort entry), considering both pre- and post-LMT prescriptions to control methodological biases in observational research. The LMT was set to 2 years. Logistic regression analysis with multivariable adjustment was conducted to analyze cancer incidence by patient-specific medication prescription status.

RESULTS

Only 33.4% of the subjects were prescribed medication early (before the LMT) with compliance. Cancer incidence in individuals with early prescription and compliance was 25% lower (odds ratio [OR], 0.75; 95% confidence interval [CI], 0.67 to 0.84) than in those without. As early-prescribed medications, metformin monotherapy and metformin combination therapy were associated with 34% (OR, 0.66; 95% CI, 0.51 to 0.83) and 25% (OR, 0.75; 95% CI, 0.64 to 0.88) lower cancer risk than non-use, respectively. Patients who were prescribed late (post-LMT) but did not comply with the prescription had a 24% (OR, 1.24; 95% CI, 0.97 to 1.58) higher cancer incidence than non-users. Among patients who started monotherapy early without changes throughout the entire follow-up period, those who started on metformin had a 37% (OR, 0.63; 95% CI, 0.41 to 0.99) lower risk of cancer than non-metformin users.

CONCLUSIONS

Doctors must prescribe antidiabetic medication early, and patient compliance is required, regardless of the prescription time, to prevent cancer. Metformin monotherapy or combination therapy is recommended as an early prescription.

Summary

Korean summary
당뇨 환자는 암 발병 위험이 높으며 암은 주요 사망 원인이다. 당뇨환자의 암발생 예방을 위한 관리로서, 당뇨병 진단 후 약물 치료 시기에 대한 연구는 부족하다. 또한, 전 세계적으로 가장 흔히 처방되는 당뇨병 치료제인 메트포민은 암 예방 효과가 있다고 알려져 왔으나 관측연구에서 발생하는 선택 편향의 문제가 제기되었고, 최근 일부 연구에서 기존의 암 예방 효과와 상충되는 결과가 나오고 있어 논쟁이 이어지고 있다. 본 연구는 선택 편향을 통제한 코호트 연구에서 조기 약물 치료와 메트포민 사용이 당뇨환자의 암 예방에 효과적임을 밝혔다. 따라서 의사들은 처음 당뇨 진단을 받은 환자에게 조기에 약물 처방을 하고, 환자들은 처방에 잘 따라야 한다. 조기 처방 약물로서 메트포민이 권장된다.

Key Message
Diabetic patients have a high risk of developing cancer, and cancer is the leading cause of death. There are few studies on the timing of medication treatment after diagnosis of diabetes. In addition, metformin, the most commonly prescribed diabetes treatment worldwide, is known to have cancer-preventive effects, but the problem of selection bias that occurs in observational studies has been raised, and some studies have recently been contradicting the existing cancer-preventing effects of metformin. This study, in a cohort study controlled for selection bias, demonstrated that early medication treatment and metformin use were effective in preventing cancer in diabetic patients.

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Association between metformin use and the risk of developing open-angle glaucoma among patients with diabetes: a retrospective cohort study and meta-analysis
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Metformin and HER2-positive breast cancer: Mechanisms and therapeutic implications
Sara S Bashraheel, Hadeel Kheraldine, Sarah Khalaf, Ala-Eddin Al Moustafa
Biomedicine & Pharmacotherapy.2023; 162: 114676. CrossRef
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Brief Communication

Cancer incidence in the Tobruk area, eastern Libya: first results from Tobruk Medical Centre: Faisal Ismail, Ahmed G. Elsayed, Islam El-Garawani, Eman Abdelsameea; Epidemiol Health. 2021;43:e2021050. Published online August 3, 2021; DOI: https://doi.org/10.4178/epih.e2021050

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Abstract

OBJECTIVES
Cancer is a major cause of morbidity and mortality worldwide, and it is an increasing problem in developing countries. Estimation of the incidence of cancer is important, especially in regions with limited epidemiological data on cancer. Therefore, the aim of this study was to provide an updated report on the incidence of cancers in the Tobruk region in eastern Libya.

METHODS

Data on cancer patients from the records of the Department of Histopathology of Tobruk Medical Centre from January 2013 to June 2020 were included.

RESULTS

In total, 402 cases were recorded. Men patients accounted for 30.3% (n=122) of cases, and women patients represented 69.6% (n=280). The overall mean age at the time of the first diagnosis was 49.0±17.1 years. The most common malignancies were breast and uterine cancer in women (18.4%, n=74; 15.9%, n=64, respectively), colorectal cancer (11.6%, n=47; 26 in women and 21 in men), bladder cancer (8.2%, n=33; 8 in women and 25 in men), and thyroid cancer (8.0%, n=32; 23 in women and 9 in men).

CONCLUSIONS

Breast and uterine cancers were the most common cancers in women, and bladder and colorectal cancer were the most common cancers in men, followed by colorectal cancer in both genders. These data will help health authorities launch preventive plans for cancer in the region. Further studies to identify aetiological factors and cancer-related risk factors need to be conducted in the region.

Summary

Key Message
Cancer incidence in the Tobruk area, eastern Libya: first results from Tobruk Medical Centre; cancer is a major cause of morbidity and mortality worldwide and so in Libya; this is an updated report on the incidence of cancers in the Tobruk region in eastern Libya.

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Global burden of thyroid cancer among adolescents and young adults, 1990-2021, and projections to 2050: an analysis based on the GBD 2021
Ming-Jie Jia, Shen Wang, Yu Li, Xing-Ning Liu, Feng Jiang, Hui-Lin Li
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Incidental Prostate Cancer Despite Normal PSA and DRE: Evidence from a Libyan TURP Cohort
Hamed Mahmood
Tobruk University Journal of Medical Sciences.2025; 9(2): 7. CrossRef
Scoping Review of Colorectal Cancer Research in Libya: Gaps and Opportunities in Peer-Reviewed Publications
Abeir El-Mogassabi, Lugien Elshakmak, Nadin Omer Hassan, Enas Mohamed Salem, Khalil Tamoos
Cancer Control.2025;[Epub] CrossRef
Policy Brief: Better Data for Breast Cancer in Libya
Tariq Alferis
Libyan Journal of Public Health Practices .2024; 1(2): 60. CrossRef
Pediatric and adolescent cancer disparities in the Middle East and North Africa (MENA) region: incidence, mortality, and survival across socioeconomic strata
Ankita Shukla, Rouba Karen Zeidan, Basema Saddik
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Libyan cancer patients at King Hussein Cancer Center for more than a decade, the current situation, and a future vision
Madiha Erashdi, Abdallah Al-Ani, Asem Mansour, Maysa Al-Hussaini
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Cancer Patterns among Patients Admitted to the Oncology Department at Benghazi Medical Center, Libya (2013-2017)
Naeima Hussein, Fathi Omar
Journal of Medicine and Health Studies.2023; : 23. CrossRef

Original Articles

Preventable causes of cancer in Texas by race/ethnicity: tobacco smoking: Franciska J. Gudenkauf, Aaron P. Thrift; Epidemiol Health. 2021;43:e2021046. Published online July 13, 2021; DOI: https://doi.org/10.4178/epih.e2021046

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Abstract Summary PDF: Abstract
OBJECTIVES
Tobacco smoking is classified as carcinogenic to humans (International Agency for Research on Cancer Group 1). We aimed to estimate the percentage and number of incident cancer cases diagnosed in Texas in 2015 that were attributable to tobacco smoking, and we examined differences in the proportions of smoking-attributable cancers between the major racial/ethnic subgroups of the population.
METHODS
We calculated population-attributable fractions for cancers attributable to tobacco smoking using prevalence data from the Texas Behavioral Risk Factor Surveillance System and relative risks associated with smoking status from pooled analyses of cohort studies or meta-analyses. Cancer incidence data were collected from the Texas Cancer Registry.
RESULTS
We estimated that 19,000 excess cancer cases or 18.4% of all cancers diagnosed in 2015 in Texans aged ≥ 25 years were caused by tobacco smoking. Males had a higher overall proportion of cancers attributable to tobacco smoking than females (male, 23.3%, 11,993 excess cases; female, 13.5%, 7,006 cases). Approximately 20% of cancer cases in non-Hispanic Whites and non-Hispanic Blacks were attributable to tobacco smoking compared to 12.8% among Hispanics.
CONCLUSIONS
Despite ongoing public health campaigns combatting tobacco use, this preventable behavior still contributes significantly to cancer incidence in Texas. Racial/ethnic differences in smoking prevalence and smoking-attributable cancer incidence should be considered when designing cancer prevention programs.; Summary

Key Message
Tobacco smoking remains a major contributor to cancer burden in the United States, particularly among men, non-Hispanic whites and non-Hispanic Blacks due to historically higher smoking rates.

Incidence and mortality of cervical cancer in Vietnam and Korea (1999-2017): Kim Ngoc Tran, Yoon Park, Byung-Woo Kim, Jin-Kyoung Oh, Moran Ki; Epidemiol Health. 2020;42:e2020075. Published online December 16, 2020; DOI: https://doi.org/10.4178/epih.e2020075

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Abstract Summary PDF

Abstract

OBJECTIVES
Cervical cancer is a major disease burden in Vietnam. This study aimed to estimate the incidence and mortality rates of cervical cancer in Vietnam (1999-2017) in comparison to those in Korea, where a population-based cancer registry and national cervical cancer screening program have been implemented.

METHODS

The estimated incidence and mortality of cervical cancer in Vietnam and Korea (1999-2017) were collected from Global Burden of Disease 2017 study. Estimated age-standardized rates (ASRs) in both countries were calculated utilizing the 1999-2017 population of each country and the World Health Organization standard population. The reported ASRs in Korea were also computed using data on incidence and mortality (1999-2017) and the Korean population from the Korea Statistical Information Service.

RESULTS

In Vietnam, the estimated incidence and mortality of cervical cancer decreased annually by 0.84% and 1.01%. In Korea, the trend of reported incidence showed a dramatic drop (1999-2007 annual percent change [APC], -4.53%) before stably declining (2007-2017 APC, -2.71%). Reported mortality also significantly decreased (2003-2008 APC, -6.63%), and then maintained a stable decline (2008-2017 APC, -3.78%). The incidence and mortality rates were higher in Vietnam than in Korea. The declining trend of incidence and mortality in Vietnam was slower than the corresponding trends in Korea.

CONCLUSIONS

A national screening program should be implemented for Vietnamese women aged over 30 to maintain, or even hasten, the decline in cervical cancer incidence and mortality. A population-based cancer registry may help monitor the effectiveness of a cervical cancer screening program.

Summary

Korean summary
국가 암 등록 체계와 국가 암 검진 프로그램이 아직 마련되지 않은 베트남에서 자궁경부암에 대한 질병부담을 줄일 수 있는 방향성을 제시하고자, 한국의 암 관리 현황과 질병부담을 비교한 연구입니다. 국가 암 등록자료를 구축하고 자궁경부암에 대한 국가 암 검진 프로그램을 도입한 한국과 베트남의 자궁경부암 발생률과 사망률 추이를 비교함으로 베트남에서도 체계적인 암 관리와 예방의 필요성을 강조하고자 한 연구입니다.

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Hien Thu Bui, Van Nu Hanh Pham, Thang Hong Vu
BMJ Open.2025; 15(1): e082145. CrossRef
Socioeconomic inequalities in cervical cancer screening practices in Vietnam: a decomposition analysis
Thi Bich-Van Nguyen, Kim-Duy Vu, Lam Tung Ngoc Cu, Minh Hai Nguyen Ngoc, Hoang-Dung Ho
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Xianying Cheng, Ping Wang, Li Cheng, Feng Zhao, Jiangang Liu
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Ondrej Holy, Ondrej Machaczka, Tereza Schovankova, Daniela Navratilova, Jarmila Zimmermannova, Romana Klasterecka, Jiri Vevoda
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Min Zhang, Jiayi Chen, Meimei Cui, Jingjing Jia, Ming Zhao, Dan Zhou, Liling Zhu, Limei Luo
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Journal of Obstetrics and Gynaecology Research.2023; 49(4): 1230. CrossRef
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Wenping Guo, Wang Jing
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Brief Communication

Testosterone levels and cause-specific mortality in the older French men without metabolic syndrome: Nasser Laouali, Sylvie Brailly-Tabard, Catherine Helmer, Marie-Laure Ancelin, Christophe Tzourio, Alexis Elbaz, Anne Guiochon-Mantel, Marianne Canonico; Epidemiol Health. 2020;42:e2020036. Published online June 1, 2020; DOI: https://doi.org/10.4178/epih.e2020036

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Abstract PDF Supplementary Material

Abstract

OBJECTIVES
Previous studies have reported controversial findings regarding the association of testosterone with mortality in older men. This heterogeneity might be partially explained by comorbidities and the presence of metabolic syndrome, as well as differential associations according to causes of death.

METHODS

We used data from a random subsample of the Three-City study, in which hormone levels were measured in 338 men ≥65 years without metabolic syndrome who were followed-up for 12 years. Vital status was determined for all participants from different sources. We used inverse-probability-weighted Cox regression to estimate the hazard ratios (HRs) of cause-specific mortality and 95% confidence intervals (CIs).

RESULTS

Over the follow-up period, 130 men died (30 from cardiovascular disease, 45 from cancer, 55 from other causes). The association of testosterone with mortality showed significant heterogeneity across causes of death (p=0.027 and p=0.022 for total and bioavailable testosterone, respectively). Higher testosterone levels were associated with increased cardiovascular mortality (HR for 1-standard deviation increase, 1.86; 95% CI, 1.28 to 2.71 and 1.50; 95% CI, 1.04 to 2.17 for total and bioavailable testosterone, respectively). By contrast, there were no significant associations of testosterone with mortality from cancer and other causes.

CONCLUSIONS

Our data suggest that the association of testosterone with mortality in men without metabolic syndrome might be differential according to the cause of death. These findings may partially explain the heterogeneity across studies on the relationship between testosterone levels and mortality.

Summary

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Hamidreza Raeisi-Dehkordi, Mojgan Amiri, Sara Beigrezaei, Hugo G Quezada-Pinedo, Farnaz Khatami, Fadi Alijla, Marinka Steur, Beatrice Minder, Angeline Chatelan, Trudy Voortman, Yvonne T van der Schouw, Oscar H Franco, Taulant Muka
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Bulletin of the Russian Military Medical Academy.2023; 25(3): 481. CrossRef

Original Articles

Effects of a cancer prevention education program on elementary school students’ knowledge, attitude, self-efficacy, and intentions in South Korea: Su Yeon Kye, Soon-Yong Hwang, Kyung Hee Oh, Jae Kwan Jun; Epidemiol Health. 2019;41:e2019027. Published online June 16, 2019; DOI: https://doi.org/10.4178/epih.e2019027

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Abstract Summary PDF

Abstract

OBJECTIVES
Most children and adolescents have low levels of cancer knowledge and awareness, and infrequently engage in preventive behaviors. This study examined the effects of a short classroom-based intervention for cancer prevention on knowledge, attitude toward cancer preventability, self-efficacy, and behavioral intentions of fifth-grade elementary school students.

METHODS

The study was based on a pre-post-follow-up, 2-group, quasi-experimental design. Participants in the intervention group attended two 40-minute sessions on cancer prevention education and watched a music video about cancer prevention, while participants in the control group were only exposed to the music video. Self-reported knowledge, attitude toward cancer preventability, self-efficacy, and behavioral intentions were assessed 1 week pre-intervention and post-intervention, as well as 3 months post-intervention.

RESULTS

The 3-month post-intervention results revealed partial effects, indicating that the education intervention improved knowledge and attitudes toward cancer preventability; however, no effects were observed on self-efficacy and behavioral intentions 3 months after the intervention.

CONCLUSIONS

Long-term regular booster sessions are required to improve not only social-cognitive factors, but also behavioral intentions, which could result in behavior changes promoting cancer prevention.

Summary

Korean summary
대부분의 아동과 청소년들은 암예방행동 실천을 잘 하지 못하고 있을뿐만 아니라 낮은 암지식 수준을 보인다. 본 연구는 초등학교 5학년 학생들을 대상으로 단기간의 교실 중심의 암예방중재가 지식, 암예방가능성에 대한 태도, 자기효능감, 행동의도에 미치는 영향을 살펴보았다. 사전-사후-3개월이후 추후조사의 형태로 두 집단 유사실험설계로 구성되었다. 중재집단의 참여자들은 2회의 40분으로 구성된 암예방교육에 참여하였고 암예방뮤직비디오를 시청하였다. 대조집단의 참여자들은 암예방뮤직비디오만 시청하였다. 지식, 암예방가능성에 대한 태도, 자기효능감, 행동의도가 중재전, 중재직후, 중재3개월후에 자가보고형식으로 측정되었다. 3개월 이후 추후조사에서 지식과 암예방가능성에 대한 태도가 향상되었으나, 자기효능감과 행동의도에서는 통계적으로 유의한 차이가 나타나지 않았다. 인지적 요소뿐만 아니라 행동적 요소를 변화하기 위해서는 장기간의 추가교육이 필요할 것으로 판단된다.

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Zhonghua Yang, Qingqing Wang, Fang Yi, Linglin Zhang, Yuting Li, Lilou Rong, Shaoping Wan
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Nutrient intake patterns and breast cancer risk among Jordanian women: a case-control study: Reema Fayez Tayyem, Reema Ibrahim Mahmoud, Muna Hussien Shareef, Lina Salah Marei; Epidemiol Health. 2019;41:e2019010. Published online March 30, 2019; DOI: https://doi.org/10.4178/epih.e2019010

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Abstract PDF

Abstract

OBJECTIVES
Breast cancer (BC) is the most common type of cancer worldwide. Globally, BC is rapidly becoming a major common health problem among women. This study aimed to evaluate the association between nutrient intake patterns and BC risk among Jordanian women.

METHODS

A total of 400 Jordanian women 20-65 years of age were recruited in this case-control study. Two hundred women recently diagnosed with BC were matched in age, income, and marital status to 200 BC-free women. A food frequency questionnaire was used to assess nutrient intake patterns.

RESULTS

In this study, 3 nutrient intake patterns were identified: a high vitamin C and β-carotene nutrient intake pattern; a high calcium, phosphorus, and vitamin D nutrient intake pattern; and a high-fat nutrient intake pattern. A significant increase in BC risk was associated with the high vitamin C and β-carotene nutrient pattern (the highest for the fourth quartile; odds ratio [OR], 5.42; 95% confidence interval [CI], 2.11 to 13.91; ptrend=0.001). In the high calcium, phosphorus, and vitamin D nutrient pattern, a significant inverse trend was detected for the risk of BC. The high-fat nutrient pattern showed a significant direct association with BC risk in the third (OR, 3.88; 95% CI, 1.58 to 9.51) and fourth (OR, 3.87; 95% CI, 1.53 to 9.77) quartiles (ptrend=0.001).

CONCLUSIONS

A significant increase in BC risk was detected for the high vitamin C and β-carotene nutrient intake pattern and the high-fat nutrient intake pattern. However, for the high calcium, phosphorus, and vitamin D nutrient intake pattern, a significant inverse trend was observed.

Summary

Citations

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Dietary patterns, nutrition, and risk of breast cancer: a case-control study in the west of Iran: Behjat Marzbani, Javad Nazari, Farid Najafi, Behnaz Marzbani, Sara Shahabadi, Mahin Amini, Mehdi Moradinazar, Yahya Pasdar, Ebrahim Shakiba, Saeed Amini; Epidemiol Health. 2019;41:e2019003. Published online January 24, 2019; DOI: https://doi.org/10.4178/epih.e2019003

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Abstract PDF

Abstract

OBJECTIVES
Unhealthy dietary patterns are the most important changeable risk factors for breast cancer. The aim of this study was to assess the relationship between dietary patterns and the risk of breast cancer among under-50 year women in the west of Iran.

METHODS

All women under 50 years old with pathologically confirmed breast cancer between 2013 and 2015 who were referred to oncology clinics in the west of Iran, and 408 under-50 women referred to other outpatient clinics who were without breast or other cancers at the time of the study and 2 years later were selected as the control group. The data were collected using the middle-aged periodical care form of the Iranian Ministry of Health and analyzed using univariate and multivariate logistic regression in Stata.

RESULTS

The most powerful risk factor for breast cancer was fried foods; the odds ratio of consuming fried foods more than once a month for breast cancer was 4.5 (95% confidence interval, 2.1 to 9.4). A dose-response model indicated that increasing vegetable and fruit consumption up to 90 servings per month decreased the odds of breast cancer, but consuming more than 90 servings per month increased the risk.

CONCLUSIONS

Inadequate consumption of vegetables and consumption of soft drinks, industrially produced juices, fried foods, and sweets were identified as risk factors for breast cancer. In response to these findings, it is necessary to raise awareness and to provide education about healthy diets and the need to change unhealthy dietary patterns.

Summary

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Abstract PDF

Abstract

OBJECTIVES
Colorectal cancer (CRC) patients are considered to have been cured when the mortality rate of individuals with the disease returns to the same level as expected in the general population. This study aimed to assess the impact of various risk factors on the cure fraction of CRC patients using a real dataset of Iranian CRC patients with a non-mixture non-parametric cure model.

METHODS

This study was conducted on the medical records of 512 patients who were definitively diagnosed with CRC at Taleghani Hospital, Tehran, Iran from 2001 to 2007. A non-mixture non-parametric cure rate model was applied to the data after using stepwise selection to identify the risk factors of CRC.

RESULTS

For non-cured cases, the mean survival time was 1,243.83 days (95% confidence interval [CI], 1,174.65 to 1,313.00) and the median survival time was 1,493.00 days (95% CI, 1,398.67 to 1,587.33). The 1- and 3-year survival rates were 92.9% (95% CI, 91.0 to 95.0) and 73.4% (95% CI, 68.0 to 79.0), respectively. Pathologic stage T1 of the primary tumor (estimate=0.58; p=0.013), a poorly differentiated tumor (estimate=1.17; p<0.001), a body mass index (BMI) between 18.6 and 24.9 kg/m2 (estimate=−0.60; p=0.04), and a BMI between 25.0 and 29.9 kg/m2 (estimate=−1.43; p<0.001) had significant impacts on the cure fraction of CRC in the multivariate analysis. The proportion of cured patients was 64.1% (95% CI, 56.7 to 72.4).

CONCLUSIONS

This study found that the pathologic stage of the primary tumor, tumor grade, and BMI were potential risk factors that had an impact on the cure fraction. A non-mixture non-parametric cure rate model provides a flexible framework for accurately determining the impact of risk factors on the long-term survival of patients with CRC.

Summary

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Factors related to cancer screening behaviors: Boyoung Choi, Tae Rim Um, Kwang-Soo Lee; Epidemiol Health. 2018;40:e2018011. Published online March 29, 2018; DOI: https://doi.org/10.4178/epih.e2018011

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
This study aimed to investigate the factors related to cancer screening behaviors (CSB).

METHODS

The 2014 Korean Community Health Survey used for analysis. The dependent variable was CSB, and the independent variables were demographic, health behavioral, and regional factor. Propensity score matching (PSM) used to control health behavior and regional factors, which were influencing CSB. For statistical analysis, chi-square test and logistic regression analysis used.

RESULTS

Logistic regression analysis after PSM showed that gender, age, marital status, educational level, monthly household income, employment type, alcohol drinking, smoking, body mass index group, chronic disease, and subjective health status influenced the CSB, there were statistical differences.

CONCLUSIONS

To improve cancer screening (CS), it is necessary to educate individuals on the need for CS and to carry out a personalized CS program based on an individual’s demographic status and health behavior.

Summary

Korean summary
본 연구의 목적은 암 검진 행태와 관련된 요인들을 조사하는 것이다. 이를 위해 2014년 지역 사회 건강 조사 데이터를 활용하였으며, 건강 검진 행동에 영향을 미치는 건강 행동 및 지역 요인을 통제하기 위해 성향점수매칭 방법을 사용하였고, 통계 분석을 위해 카이 제곱 검정과 로지스틱 회귀 분석을 사용하였다. 성향점수 매칭 후 분석 결과에서 성별, 연령, 결혼 상태, 교육 수준, 월평균 가구 소득, 고용형태, 음주, 흡연, BMI 그룹, 만성 질환, 주관적 건강 상태가 암 검진 수진에 영향을 미치는 것으로 나타났다. 암 검진 수진을 향상시키기 위해서 암 검진의 필요성에 대한 교육과 개인의 인구사회학적, 건강 행태를 고려한 맞춤형 암 검진 프로그램이 필요하다. 본 연구는 성향점수 매칭을 이용하여 교란요인을 통제한 후 암 검진 수진의 영향을 살펴보았다는 데에 의의가 있다.

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Physician’s awareness of lung cancer screening and its related medical radiation exposure in Korea: Seri Hong, Suyeon Kim, Mina Suh, Boyoung Park, Kui Son Choi, Jae Kwan Jun; Epidemiol Health. 2018;40:e2018002. Published online January 20, 2018; DOI: https://doi.org/10.4178/epih.e2018002

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Through a survey on perception of lung cancer screening and accompanying medical radiation exposure in Korea, the present study was to investigate its current situations and evaluate various perception of physicians regarding it in order to propose measures for improvements.

METHODS

Medical specialists in national cancer screening institutions selected through stratified random sampling were subjected to face-to-face interview using a structured questionnaire. We investigated physicians’ perception on effectiveness of lung cancer screening depending on screening modality, selection criteria for subjects of screening, types of equipment used to screen, and perception for seriousness of adverse effects following the test. In addition, odds ratios to underestimate risk of radiation exposure from screening were calculated through logistic regression analysis.

RESULTS

Each response that chest X-ray is effective for lung cancer screening and that smoking history is not considered prior to screening recommendation accounted for more than 60% of respondents, suggesting the chance of unnecessary screening tests. Regarding adverse effects of lung cancer screening, about 85% of respondents replied that false positive, radiation exposure, and overdiagnosis could be ignored. About 70% of respondents underestimated radiation dose from lung cancer screening, and a low proportion of physicians informed patients of radiation exposure risk.

CONCLUSIONS

It was found that most physicians underestimated harms of lung cancer screening including radiation exposure and were lack of awareness regarding lung cancer screening. It should be noted that physicians need to have proper perceptions about screening recommendation and accompanying possible harms, for successful implementation of the screening program.

Summary

Korean summary
전국 100여개 국가암검진 기관을 대상으로 폐암검진 관련 설문을 수행한 결과, 효과적인 폐암검진의 수단이나 방법에 대한 이해 및 검사에 수반되는 각종 부작용에 대한 의사들의 인식이 확연히 부족한 것으로 조사되었다. 그 중에서도 특히 의료방사선 노출에 대한 낮은 인지도는, 촬영 시 피폭량에 대한 전반적인 과소평가 및 방사선 노출 위험과 관련한 환자 교육의 부재를 통해 확인할 수 있었다. 인구집단 대상 선별검사의 도입에 따른 잠재적인 위해 가능성과 그 결과에 대한 고민은 반드시 필요하며, 이와 관련된 의료제공자들의 인식 개선을 촉구하는 본 연구는 정책 도입에 앞서 선결되어야 할 과제로서 공중보건학적 측면에서 중요한 의의를 지닌다.

Citations

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Assessment of radiation knowledge and awareness among radiology staff in tertiary hospitals: a study in Wuxi, China
J. Yuan, D. Liu, J. Ni
Radioprotection.2024; 59(3): 184. CrossRef
Why is the screening rate in lung cancer still low? A seven-country analysis of the factors affecting adoption
Charlotte Poon, Tim Wilsdon, Iqra Sarwar, Alexander Roediger, Megan Yuan
Frontiers in Public Health.2023;[Epub] CrossRef
Why clinicians overtest: development of a thematic framework
Justin H. Lam, Kristen Pickles, Fiona F. Stanaway, Katy J. L. Bell
BMC Health Services Research.2020;[Epub] CrossRef

Factors affecting satisfaction with cancer information provided through the social networking services of the National Cancer Information Center in Korea: Su Yeon Kye, Min Hee Lee, Jisu Yoo, Kyung Hee Oh, Jae Kwan Jun; Epidemiol Health. 2017;39:e2017057. Published online December 11, 2017; DOI: https://doi.org/10.4178/epih.e2017057

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Abstract Summary PDF

Abstract

OBJECTIVES
This study aimed to identify the characteristics of social networking service (SNS) users and to assess the relationship of those factors to user satisfaction with the SNSs of the National Cancer Information Center (NCIC) in South Korea.

METHODS

A Web-based survey was completed by 1,670 users of the NCIC SNSs, who provided data on the sources they consulted for information about cancer, determinants of SNS use, sources of NCIC SNS awareness, the time of day they used the SNS, and their satisfaction level.

RESULTS

Facebook users mainly became aware of the NCIC SNSs through an acquaintance’s recommendation, while Twitter was accessed through other SNSs or blogs. Users in their 30s were less satisfied with the NCIC SNSs than those in their teens and 20s. Browsing for cancer-related information on the Internet, prioritizing information quality, and engaging in active use were related to a high level of satisfaction with the NCIC SNSs. Individuals who were exposed to the NCIC SNSs through other SNSs or printed materials were less satisfied with their experience of the NCIC SNSs than those who received a recommendation from an acquaintance.

CONCLUSIONS

These findings may act as a catalyst to guide public health agencies to enhance their use of SNSs.

Summary

Korean summary
본 연구는 소셜네트워크서비스 사용자의 특성을 파악하고 우리나라 국가암정보센터 소셜네트워크서비스 사용자의 만족도에 영향을 주는 요인을 파악하고자 하였다. 국가암정보센터 소셜네트워크서비스 사용자 1,670명을 대상으로 암정보원, 서비스사용동기, 서비스를 알게된 경위, 사용시간대, 서비스 사용 만족도를 조사하였다. 분석결과, 페이스북은 주로 주변 아는 사람들의 권유로 사용하기 시작하였고, 트위터는 다른 사람의 소셜네트워크서비스를 통해 접근하고 있었다. 국가암정보센터에 대한 만족도에 영향을 주는 요인을 살펴보면, 10-20대에 비하여 30대의 만족도가 낮았으며, 인터넷을 통해 암정보를 얻고 있는 경우, 암정보의 질을 중시 여기는 경우, 활발하게 소셜네트워크서비스를 사용하고 있는 경우에 만족도가 높았다. 또한, 다른 사람들의 소셜네트워크서비스나 인쇄물을 통해 국가암정보센터 소셜네트워크서비스를 알게 된 경우 주변 사람들의 권고로 사용하게 된 경우에 비해 만족도가 낮았다. 공공보건의료기관들은 자 기관의 소셜네트워크 서비스 접근도 및 만족도 향상을 위하여 본 결과를 활용할 수 있을 것이다

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Cancer screening rate in people with diabetes in the Korean population: results from the Korea National Health and Nutrition Examination Survey 2007-2009: Kumban Walter Chuck, Minji Hwang, Kui Son Choi, Mina Suh, Jae Kwan Jun, Boyoung Park; Epidemiol Health. 2017;39:e2017036. Published online August 10, 2017; DOI: https://doi.org/10.4178/epih.e2017036

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Abstract Summary PDF

Abstract

OBJECTIVES
To investigate the screening rates for gastric, breast, and cervical cancer in people with diabetes compared with people without diabetes.

METHODS

Data from the Korea National Health and Nutrition Examination Survey (2007-2009) were used. Cancer-free men who were 40 years old and over and cancer-free women who were 30 years old and over were included. The lifetime screening rate and regular screening rate were compared in people with and without diabetes.

RESULTS

Fewer people with diabetes than people without diabetes had ever received cancer screening (53.5 vs. 59.5%, p<0.001 for gastric cancer; 60.5 vs. 71.5%, p<0.001 for breast cancer; and 49.1 vs. 59.6%, p<0.001 for cervical cancer). Fewer people with diabetes than people without diabetes received the recommended screenings for gastric cancer (38.9 vs. 42.9%, p<0.001), breast cancer (38.8 vs. 44.6%, p<0.001), and cervical cancer (35.1 vs. 51.2%, p<0.001). In subgroup analyses according to socioeconomic factors, the lifetime and recommended screening rates were lower in the diabetic population in most socioeconomic subgroups. In the multivariate analysis adjusted for socioeconomic factors, people with diabetes showed lower lifetime screening rates for gastric and cervical cancer (odds ratio [OR], 0.8; 95% confidence interval [CI], 0.7 to 0.9 and OR, 0.7; 95% CI, 0.6 to 0.9), and lower regular screening rates for breast and cervical cancer (OR, 0.7; 95% CI, 0.6 to 0.9 and OR, 0.7; 95% CI, 0.5 to 0.9).

CONCLUSIONS

The cancer screening rate in people with diabetes was lower than in people without diabetes. Considering the higher cancer risk in people with diabetes, efforts to increase the screening rate in this high-risk population should be implemented.

Summary

Korean summary
기존의 여러 연구에서 당뇨병이 있는 사람에서 당뇨병이 없는 경우에 비해 암 발생의 위험이 증가하는 것이 확인되었다. 본 연구에서 당뇨병이 있는 사람과 없는 사람에서 암 수검률을 비교했을 때, 당뇨병이 있는 사람의 위암, 유방암, 자궁경부암의 평생 수검률과 권고안 이행 수검률은 모두 낮았다. 당뇨병 환자가 암 발생의 고위험군임을 고려하였을 때 이들을 대상으로 암 검진 수검률을 높이려는 노력이 필요하다.

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Review

Smokeless tobacco (paan and gutkha) consumption, prevalence, and contribution to oral cancer: Kamal Niaz, Faheem Maqbool, Fazlullah Khan, Haji Bahadar, Fatima Ismail Hassan, Mohammad Abdollahi; Epidemiol Health. 2017;39:e2017009. Published online March 9, 2017; DOI: https://doi.org/10.4178/epih.e2017009

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Abstract PDF

Abstract

Smokeless tobacco consumption, which is widespread throughout the world, leads to oral submucous fibrosis (OSMF), which is a long-lasting and devastating condition of the oral cavity with the potential for malignancy. In this review, we mainly focus on the consumption of smokeless tobacco, such as paan and gutkha, and the role of these substances in the induction of OSMF and ultimately oral cancer. The list of articles to be examined was established using citation discovery tools provided by PubMed, Scopus, and Google Scholar. The continuous chewing of paan and swallowing of gutkha trigger progressive fibrosis in submucosal tissue. Generally, OSMF occurs due to multiple risk factors, especially smokeless tobacco and its components, such as betel quid, areca nuts, and slaked lime, which are used in paan and gutkha. The incidence of oral cancer is higher in women than in men in South Asian countries. Human oral epithelium cells experience carcinogenic and genotoxic effects from the slaked lime present in the betel quid, with or without areca nut. Products such as 3-(methylnitrosamino)-proprionitrile, nitrosamines, and nicotine initiate the production of reactive oxygen species in smokeless tobacco, eventually leading to fibroblast, DNA, and RNA damage with carcinogenic effects in the mouth of tobacco consumers. The metabolic activation of nitrosamine in tobacco by cytochrome P450 enzymes may lead to the formation of N-nitrosonornicotine, a major carcinogen, and micronuclei, which are an indicator of genotoxicity. These effects lead to further DNA damage and, eventually, oral cancer.

Summary

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Original Articles

Cancer mortality-to-incidence ratio as an indicator of cancer management outcomes in Organization for Economic Cooperation and Development countries: Eunji Choi, Sangeun Lee, Bui Cam Nhung, Mina Suh, Boyoung Park, Jae Kwan Jun, Kui Son Choi; Epidemiol Health. 2017;39:e2017006. Published online February 5, 2017; DOI: https://doi.org/10.4178/epih.e2017006

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Abstract PDF

Abstract

OBJECTIVES
Assessing long-term success and efficiency is an essential part of evaluating cancer control programs. The mortality-to-incidence ratio (MIR) can serve as an insightful indicator of cancer management outcomes for individual nations. By calculating MIRs for the top five cancers in Organization for Economic Cooperation and Development (OECD) countries, the current study attempted to characterize the outcomes of national cancer management policies according to the health system ranking of each country.

METHODS

The MIRs for the five most burdensome cancers globally (lung, colorectal, prostate, stomach, and breast) were calculated for all 34 OECD countries using 2012 GLOBOCAN incidence and mortality statistics. Health system rankings reported by the World Health Organization in 2000 were updated with relevant information when possible. A linear regression model was created, using MIRs as the dependent variable and health system rankings as the independent variable.

RESULTS

The linear relationships between MIRs and health system rankings for the five cancers were significant, with coefficients of determination ranging from 49 to 75% when outliers were excluded. A clear outlier, Korea reported lower-than-predicted MIRs for stomach and colorectal cancer, reflecting its strong national cancer control policies, especially cancer screening.

CONCLUSIONS

The MIR was found to be a practical measure for evaluating the long-term success of cancer surveillance and the efficacy of cancer control programs, especially cancer screening. Extending the use of MIRs to evaluate other cancers may also prove useful.

Summary

Citations

Citations to this article as recorded by

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Impaired fasting glucose, single-nucleotide polymorphisms, and risk for colorectal cancer in Koreans: Keum Ji Jung, Miyong To Kim, Sun Ha Jee; Epidemiol Health. 2016;38:e2016002. Published online January 6, 2016; DOI: https://doi.org/10.4178/epih.e2016002

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Abstract Summary PDF

Abstract

OBJECTIVES
Numerous studies have demonstrated that fasting serum glucose (FSG) levels and certain single-nucleotide polymorphisms (SNPs) are related to an increased risk of colorectal cancer (CRC); however, their combined effects are still unclear.

METHODS

Of a total of 144,527 men and women free of cancer at baseline, 317 developed CRC during 5.3 years of follow-up. A case-cohort study (n=1,691) was used, consisting of participants with a DNA sample available. Three well-known SNPs (rs3802842, rs6983267, rs10795668) were genotyped. Hazard ratios (HR) and 95% confidence intervals (CI) of CRC, colon and rectal cancer were calculated, with the Cox proportional hazard models.

RESULTS

The crude incidence rates per 100,000 person-years were 41.1 overall, 48.4 for men, and 29.3 for women. Among participants with dysglycemia, SNPs rs3802842 and rs6983267 were both associated with an increased risk of CRC (HR, 3.2; 95% CI, 1.9 to 5.5 and HR, 1.8; 95% CI, 1.1 to 3.1, respectively) and rectal cancer (HR, 3.4; 95% CI, 1.8 to 6.6 and HR, 3.3; 95% CI, 1.6 to 7.1, respectively). The interaction effect of dysglycemia and SNPs was positive, that is, resulted in an elevated risk of CRC, but was not statistically significant.

CONCLUSIONS

This study demonstrates that both high FSG and certain SNPs are major risk factors for CRC and rectal cancer but that they did not interact synergistically. The difference in effect size of the SNPs according to CRC subtype (i.e., colon or rectal cancer) and presence of dysglycemia merits further research.

Summary

Korean summary
본 연구에서는 공복혈당농도와 대장암과 관련된 단일염기다형성(SNP)과의 관련성을 살펴 보았다. 높은 공복혈당농도와 단일염기다형성(SNP_rs3802842, rs6983267)은 대장암의 주요한 위험요인이었으나, 두 가지 요인의 상호작용으로 인한 시너지 효과는 없는 것으로 나타났다. 대장암의 아형에 따른 다른 효과 크기와 이상혈당증 유무에 따른 향후 연구가 더 필요할 것으로 생각된다.

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Glycemic traits and colorectal cancer survival in a cohort of South Korean patients: A Mendelian randomization analysis
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Methods

The causality between smoking and lung cancer among groups and individuals: addressing issues in tobacco litigation in South Korea: Young-Ho Khang; Epidemiol Health. 2015;37:e2015026. Published online May 31, 2015; DOI: https://doi.org/10.4178/epih/e2015026

31,886 View
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Abstract Summary PDF Supplementary Material

Abstract

This article discusses issues on the causality between smoking and lung cancer, which have been raised during the tobacco litigation in South Korea. It should be recognized that the explanatory ability of risk factor(s) for inter-individual variations in disease occurrence is different from the causal contribution of the risk factor(s) to disease occurrence. The affected subjects of the tobacco litigation in South Korea are lung cancer patients with a history of cigarette smoking. Thus, the attributable fraction of the exposed rather than the population attributable fraction should be used in the tobacco litigation regarding the causal contribution of smoking to lung cancer. Scientific evidence for the causal relationship between smoking and lung cancer is based on studies of individuals and groups, studies in animals and humans, studies that are observational or experimental, studies in laboratories and communities, and studies in both underdeveloped and developed countries. The scientific evidence collected is applicable to both groups and individuals. The probability of causation, which is calculated based on the attributable fraction for the association between smoking and lung cancer, could be utilized as evidence to prove causality in individuals.

Summary

Korean summary
이 글에서는 우리나라 담배소송 과정에서 제기된 흡연과 폐암의 인과성에 대하여 논하였다. 질병 발생의 개인 간 변이에 대한 위험 요인의 설명력과 질병발생에 미치는 위험요인의 인과적 기여도는 다르다는 점을 지적하였다. 개인에서의 흡연과 폐암의 인과성에 대한 정보로 인과확률이 활용될 수 있음을 강조하였다.

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Development and application of patient decision aids: Jong-Myon Bae; Epidemiol Health. 2015;37:e2015018. Published online April 8, 2015; DOI: https://doi.org/10.4178/epih/e2015018

29,337 View
162 Download
4 Web of Science
8 Crossref

Abstract PDF Supplementary Material

Abstract

With the current overdiagnosis of thyroid cancer resulting from routine screening in Korea, it is necessary to educate the public that not all cancers are malignant. The exposure to patient decision aids (PtDAs) compared to usual care reduced the number of people choosing to undergo prostate-specific antigen screening. This article introduces the definition, usefulness, and developmental processes of PtDAs and suggests the urgent need for a Korean PtDA related to thyroid cancer screening.

Summary

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Health Statistics

Trends of liver cancer and its major risk factors in Korea: Eun-Young Lee, Tran Thi Xuan Mai, Yoonjung Chang, Moran Ki; Epidemiol Health. 2015;37:e2015016. Published online March 11, 2015; DOI: https://doi.org/10.4178/epih/e2015016

36,418 View
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Abstract Summary PDF

Abstract

The Republic of Korea (hereafter Korea) is one of the countries with high incidence of liver cancer and there is great difference in incidence of liver cancer between male and female. We investigated the sex-specific trends of three major risk factors of liver cancer, which are hepatitis B virus(HBV) infection, hepatitis C virus(HCV) infection, and alcoholic liver cirrhosis. The incidence of liver cancer was obtained from the Cancer Registration Statistics of the National Cancer Center of Korea. Hepatitis B surface antigen (HBsAg) seropositivity was based on data from the 2011 Korea National Health and Nutrition Examination Survey. Disease statistics from the Health Insurance Review and Assessment Service of Korea were used to evaluate trends in HCV infection and alcoholic liver cirrhosis. The prevalence of these risk factors were compared with the incidence of liver cancer. Males had a three to four times higher incidence of liver cancer than females did from 1999 to 2011. This gap between the incidence for males and females increased with age and males aged 50 to 59 showed a five times higher incidence than females of the same age did. In general, HBsAg seropositivity decreased from 1998 to 2011. The prevalence of HCV infections was 96.2 and 90.3 per 100,000 females and males, respectively in 2013. The prevalences of HCV infections from 2009 to 2013 did not substantially differ. The annual average prevalence of alcoholic liver cirrhosis from 2009 to 2013 was 77.22 and 8.90 per 100,000 males and females, respectively; the prevalence among males was 8.7 times higher than that among females. The prevalence rapidly increased with age in males, and males aged 60 to 69 peaked with a 19.2 times higher prevalence than that among females of the same age group. We found that the incidence of alcoholic liver cirrhosis, a major risk factor of liver cancer, exhibited a trend similar to that of liver cancer incidence in males, and this trend also differed remarkably by sex.

Summary

Korean summary
한국의 간암 발생 추세에서 나타나는 큰 남녀차이와 관련하여 간암의 주요 위험요소로 평가되는 만성 간염, 음주, 간경변과 관련한 B형간염, C형간염, 알코올성 간경변의 유병률 추세를 살펴본 결과 알코올성 간경변의 유병률 추세에서 간암발생에서와 유사한 큰 남녀차이가 발견되었다.

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