Epidemiology and Health

Original article

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;e2024026. Published online January 25, 2024; DOI: https://doi.org/10.4178/epih.e2024026 [Accepted]

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Abstract PDF: 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 mean and 95% confidence interval 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=0.0153) and higher levels of adiponectin (p for trend=0.0095). Similar significant associations of hs-CRP (p for trend=0.0040) and adiponectin (p for trend=0.0097) 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=0.0198), 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

Original Articles

Estimated trends in hospitalizations due to occupational injuries in Korea based on the Korean National Hospital Discharge In-depth Injury Survey (2006-2019): Seong-Uk Baek, Won-Tae Lee, Min-Seok Kim, Myeong-Hun Lim, Jin-Ha Yoon; Epidemiol Health. 2023;45:e2023042. Published online April 5, 2023; DOI: https://doi.org/10.4178/epih.e2023042

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
In recent years, occupational injuries have sparked a huge social and political debate. Thus, in this study, we focused on the characteristics and trends of occupational injuries requiring hospitalization in Korea.

METHODS

The Korea National Hospital Discharge In-depth Injury Survey was designed to estimate the annual number and characteristics of all injury-related hospitalizations in Korea. The annual number of hospitalizations due to occupational injuries and the age-standardized rates (ASRs) were estimated from 2006 to 2019. The annual percentage change (APC) and average annual percentage change (AAPC) of ASRs and their 95% confidence intervals (CIs) were calculated using joinpoint regression. All analyses were stratified by gender.

RESULTS

In men, the APC of the ASRs of all-cause occupational injuries was -3.1% (95% CI, -4.5 to -1.7) in 2006-2015. However, a non-significant upward trend was observed after 2015 (APC, 3.3%; 95% CI, -1.6 to 8.5). In women, the APC of all-cause occupational injuries was -8.6% (95% CI, -12.1 to -5.1) in 2006-2012. However, a non-significant upward trend was observed after 2012 (APC, 2.1%; 95% CI, -0.9 to 5.2). A recent upward trend in stabbing injuries was observed after 2012 (APC, 4.7%; 95% CI, -1.8 to 11.8) in women. A non-significant overall increasing trend was also observed for occupational injuries caused by exposure to extreme temperatures (AAPC, 3.7%; 95% CI, -1.1 to 8.7) in women.

CONCLUSIONS

A recent upward trend in all-cause injury hospitalizations and hospitalizations caused by stabbing injuries was observed. Therefore, active policy interventions are required to prevent occupational injuries.

Summary

Korean summary
본 연구는 퇴원환자 심층조사를 사용하여 2006년부터 2019년까지 우리나라에서 발생한 업무상 손상의 추세를 연령표준화발생률을 구함으로써 분석하였다. 남녀 모두에서 2010년대 초반 까지는 발생률이 유의하게 감소하는 추세를 보였지만, 2013-2015년 이후부터는 통계적으로 유의하지 않은 점진적 상승 추세가 관찰되었다. 이러한 연구 결과는 업무상 손상을 예방하기 위해 적극적인 정책적 개입이 필요하다는 것을 시사한다.

Key Message
This study analyzed the trends in work-related injury occurrences in South Korea from 2006 to 2019 based on a nationally representative, repeated cross-sectional dataset. Age-standardized rates were calculated and their annual trend was estimated using a JointPoint regression. While both males and females exhibited a significant decline in occupational injury rates until the early 2010s, a non-significant but gradual upward trend has been observed since 2013-2015. These findings underscore the need for active policy interventions to prevent work.

Citations

Citations to this article as recorded by

Factors Affecting Mortality and Distribution of Co-morbidities in Chronic Obstructive Pulmonary Disease
Sung-Soo Kim
Journal of Health Informatics and Statistics.2024; 49(1): 35. CrossRef

Real-world incidence of endopthalmitis after intravitreal anti-VEGF injections in Korea: findings from the Common Data Model in ophthalmology: Yongseok Mun, Seng Chan You, Da Yun Lee, Seok Kim, Yoo-Ri Chung, Kihwang Lee, Ji Hun Song, Young Gun Park, Young Hoon Park, Young-Jung Roh, Se Joon Woo, Kyu Hyung Park, Rae Woong Park, Sooyoung Yoo, Dong-Jin Chang, Sang Jun Park; Epidemiol Health. 2021;43:e2021097. Published online November 9, 2021; DOI: https://doi.org/10.4178/epih.e2021097

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
The aim of this study was to evaluate the real-world incidence of endophthalmitis after intravitreal anti-vascular endothelial growth factor (VEGF) injections using data from the Observational Medical Outcomes Partnership (OMOP) Common Data Model (CDM).

METHODS

Patients with endophthalmitis that developed within 6 weeks after intravitreal anti-VEGF injections were identified in 3 large OMOP CDM databases.

RESULTS

We identified 23,490 patients who received 128,123 intravitreal anti-VEGF injections. The incidence rates of endophthalmitis were 15.75 per 10,000 patients and 2.97 per 10,000 injections. The incidence rates of endophthalmitis for bevacizumab, ranibizumab, and aflibercept (per 10,000 injections) were 3.64, 1.39, and 0.76, respectively. The annual incidence has remained below 5.00 per 10,000 injections since 2011 despite the increasing number of intravitreal anti-VEGF injections. Bevacizumab presented a higher incidence rate for endophthalmitis than ranibizumab and aflibercept (incidence rate ratio, 3.17; p=0.021).

CONCLUSIONS

The incidence of endophthalmitis after intravitreal anti-VEGF injections has stabilized since 2011 despite the explosive increase in anti-VEGF injections. The off-label use of bevacizumab accounted for its disproportionately high incidence of endophthalmitis. The OMOP CDM, which includes off-label uses, laboratory data, and a scalable standardized database, could provide a novel strategy to reveal real-world evidence, especially in ophthalmology.

Summary

Korean summary
- 공통데이터모델 (Observational Medical Outcomes Partnership Common Data Model, OMOP CDM)을 통해 유리체강내 항혈관내피성장인자 주입술 후 발생한 안내염의 실세계 발생률 (Real-world incidence)은 1만명 당 15.75명, 주사 1만회 당 2.97회였음을 알 수 있었다. - 베바시주맙에서 다른 항혈관내피성장인자에 비해 유리체강내 주사 후 안내염 발생 비율이 높았으며, 이는 약제의 분주로 인한 오염과 관련이 있을 것이다. - 공통데이터모델은 건강보험 청구자료가 포함하지 않는 유리체강내 베바시주맙 사용과 같은 오프라벨 의약품 사용 자료까지 포함하기 때문에, 유리체강내 항혈관내피성장인자 주입 후 발생한 안내염의 인구기반 발생률 추정을 가능케 했다.

Key Message
- The real-world incidence of endophthalmitis after intravitreal anti-vascular endothelial growth factor (VEGF) injections was 15.75 per 10,000 patients and 2.97 per 10,000 injections based on data from the Observational Medical Outcomes Partnership (OMOP) Common Data Model (CDM). - Patients treated with bevacizumab showed a significantly higher incidence rate of post-injection endophthalmitis, which might have resulted from contamination related to the division of bevacizumab. - OMOP CDM provides insights into the population-based incidence rate of endophthalmitis since it covers off-label prescriptions including intravitreal bevacizumab, which the national claims database does not cover.

Citations

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Real-World Treatment Intensity and Patterns in Patients With Myopic Choroidal Neovascularization: Common Data Model in Ophthalmology
Manh-Hung Bui, Da Yun Lee, Sang Jun Park, Kyu Hyung Park
Journal of Korean Medical Science.2023;[Epub] CrossRef
Efficacy of Injection Interval Shortening in Neovascular Age-related Macular Degeneration with Limited Response to Bimonthly Aflibercept
Min Chul Kim, Jae Hui Kim
Journal of the Korean Ophthalmological Society.2023; 64(8): 700. CrossRef
Postintravitreal Injection Endophthalmitis: Incidence, Characteristics, Management, and Outcome
Bar Davidov, Avi Ohayon, Omer Trivizki, Shulamit Schwartz, Shiri Shulman, Akio Oishi
Journal of Ophthalmology.2023; 2023: 1. CrossRef
Aflibercept

Reactions Weekly.2023; 1983(1): 23. CrossRef
Real-world treatment intensities and pathways of macular edema following retinal vein occlusion in Korea from Common Data Model in ophthalmology
Yongseok Mun, ChulHyoung Park, Da Yun Lee, Tong Min Kim, Ki Won Jin, Seok Kim, Yoo-Ri Chung, Kihwang Lee, Ji Hun Song, Young-Jung Roh, Donghyun Jee, Jin-Woo Kwon, Se Joon Woo, Kyu Hyung Park, Rae Woong Park, Sooyoung Yoo, Dong-Jin Chang, Sang Jun Park
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ERJ Open Research.2022; 8(4): 00168-2022. CrossRef
Towards effective data sharing in ophthalmology: data standardization and data privacy
William Halfpenny, Sally L. Baxter
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Epidemiology and treatment status of hepatitis C virus infection among people who have ever injected drugs in Korea: a prospective multicenter cohort study from 2007 to 2019 in comparison with non-PWID: Kyung-Ah Kim, Gwang Hyun Choi, Eun Sun Jang, Young Seok Kim, Youn Jae Lee, In Hee Kim, Sung Bum Cho, Moran Ki, Hwa Young Choi, Dahye Paik, Sook-Hyang Jeong; Epidemiol Health. 2021;43:e2021077. Published online October 6, 2021; DOI: https://doi.org/10.4178/epih.e2021077

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Abstract Summary PDF

Abstract

OBJECTIVES
Injection drug use is a major risk factor for hepatitis C virus (HCV) infection; however, limited data on this topic are available in Korea. Thus, this study aimed to investigate the epidemiological and clinical characteristics, treatment uptake, and outcomes of HCV infection among people who inject drugs (PWID).

METHODS

We used the data from the Korea HCV cohort, which prospectively enrolled patients with HCV infection between 2007 and 2019. Clinical data and results of a questionnaire survey on lifetime risk factors for HCV infection were analyzed according to a self-reported history of injection drug use (PWID vs. non-PWID group).

RESULTS

Among the 2,468 patients, 166 (6.7%) were in the PWID group, which contained younger patients (50.6±8.2 vs. 58.2±13.1 years) and a higher proportion of male (81.9 vs. 48.8%) than the non-PWID group. The distribution of PWID showed significant regional variations. Exposure to other risk factors for HCV infection was different between the groups. The proportion of patients with genotype non-2 infection was higher in the PWID group. Treatment uptake was higher in the PWID group in the interferon era; however, it was comparable between the groups in the direct-acting antiviral era. The rate of sustained virological response did not significantly differ between the groups.

CONCLUSIONS

As of 2019, PWID constituted a minority of HCV-infected people in Korea. The epidemiological characteristics, but not treatment uptake and outcomes, were different between the PWID and non-PWID groups. Therefore, active HCV screening and treatment should be offered to PWID in Korea.

Summary

Korean summary
1. 국내 C형간염 환자 중 정맥주사 사용자의 비율은 6.7%로 서구에 비하면 낮은 편이며, 지역별로 차이가 있다. 2. C형간염 환자 중 정맥주사 사용자는 비사용자에 비하여 연령, 성별 및 C형간염 위험 요인 노출 등에서 상이한 역학적 특성을 보인다. 3. 정맥주사 사용자의 C형간염 치료 수용률이나 치료 성공률은 비사용자와 비슷하다.

Key Message
As of 2019, PWID comprised a minority (6.7%) of all HCV-infected people in South Korea. The epidemiological features of the PWID group were different from those of the non-PWID group in terms of age, sex and exposure to risk factors of HCV infection. However, the treatment uptake and outcomes were not significantly different between these 2 groups in DAA era. Therefore, considering the global and national increase in the number of PWID and the contribution of PWID to new cases of HCV infection, active screening and treatment should be offered to PWID in Korea.

Citations

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Prevalence and factors associated with hepatitis C among pregnant women in China: a cross-sectional study
Sun He, Gao Shuang, Wu Yinglan, Wang Lan, Wang Wei, Wang Ailing, Wang Changhe, Wang Xiaoyan, Gao Qun, Lu Zechun, Huang Dongxu, Wang Yu, Mo Phoenix Kit Han, Chen Zhongdan, Polin Chan, Wang Qian
Scientific Reports.2023;[Epub] CrossRef
Hepatitis C Virus Seroprevalence in Persons Who Inject Drugs in Korea, 2012–2022: A Multicenter, Retrospective Study
Jihye Kim, Gwang Hyeon Choi, Og-Jin Jang, Younghoon Chon, Sung Nam Cho, Dohoon Kwon, Sook-Hyang Jeong
Journal of Korean Medical Science.2023;[Epub] CrossRef

Case Report

In-Flight Transmission of Novel Influenza A (H1N1): Joon Hyung Kim, Dong-Han Lee, Sang-Sook Shin, Chun Kang, Jin Seok Kim, Byung Yool Jun, Jong-Koo Lee; Epidemiol Health. 2010;32:e2010006. Published online May 31, 2010; DOI: https://doi.org/10.4178/epih/e2010006

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Abstract PDF

Abstract

<p>The Korea Centers for Disease Control and Prevention confirmed two patients, who had taken the same plane from Los Angeles to Seoul, with novel influenza A (H1N1). Through contact tracing, we concluded that the second patient was infected during the flight.</p>

Summary

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