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Korea Youth Risk Behavior Survey: achievements in the last 20 years and future directions
Yangha Kim, Yunjung Choi, Suyeon Park, Ji-Su Park, Sun-Ja Kim, Yoonjung Kim, Sungha Yun, Sunhye Choi, Soyeon Kim, Kyungwon Oh
Epidemiol Health. 2026;48:e2026025.   Published online June 8, 2026
DOI: https://doi.org/10.4178/epih.e2026025
  • 2,597 View
  • 69 Download
AbstractAbstract AbstractSummary PDF
Abstract
The Korea Youth Risk Behavior Survey (KYRBS) has been conducted annually by the Korea Disease Control and Prevention Agency (KDCA) since 2005 to monitor trends in health behaviors among Korean adolescents, with the 20th survey completed in 2024. Each year, approximately 60,000 middle and high school students participate in an anonymous, self-administered, web-based survey comprising approximately 110 health behavior items. Over the past 20 years, school-level and student-level participation rates averaged 99.8% and 94.9%, respectively, with a cumulative total of 1,304,561 participants. The prevalence of current cigarette smoking decreased from 11.8% (male, 14.3%; female, 8.9%) in 2005 to 3.6% (male, 4.8%; female, 2.4%) in 2024, and the prevalence of current drinking decreased from 27.0% (male, 27.0%; female, 26.9%) to 9.7% (male, 11.8%; female, 7.5%). In contrast, the prevalence of skipping breakfast increased from 27.1% (male, 26.4%; female, 28.0%) to 42.4% (male, 40.2%; female, 44.7%), whereas the prevalence of depressive symptoms showed little overall change (29.9% [male, 25.6%; female, 34.7%] in 2005 and 27.7% [male, 23.1%; female, 32.5%] in 2024). Survey data are released within the same year of collection and have been used as key evidence for the development and evaluation of adolescent health policies, including the Master Plans for Student Health Promotion and the National Health Plan in Korea. The KYRBS will continue to develop new survey items reflecting emerging health issues, expand the target population to include children, and regularly produce regional-level adolescent health statistics, thereby maintaining its role as a key national health surveillance system.
Summary
Korean summary
• 질병관리청은 2005년 우리나라 청소년의 건강행태 현황 및 변화를 파악하기 위해 청소년건강행태조사를 도입하였다 • 지난 20년간 시의성 있는 조사항목 도입 및 결과 공표, 조사방법 개선, 원시자료 공개 등을 통해 청소년 건강정책 및 사업에 필요한 근거를 생산하고 관련 분야 연구에 활용되어 왔다. • 향후에도 조사대상 확대, 지역 단위 청소년 건강통계 생산, 자료 활용도 제고 등 지속적으로 조사체계 확장을 추진할 예정이다.
Key Message
• The Korea Youth Risk Behavior Survey (KYRBS) was launched in 2005 to monitor health behaviors and emerging health issues among Korean adolescents. • Over the past 20 years, the KYRBS has become an essential source of evidence for adolescent health policies, programs, and research by continuously updating survey content, improving survey methods, and providing timely data and public access to the dataset. • Future efforts will focus on expanding the target population, strengthening local-level statistics, and improving data utilization to further enhance the national adolescent health surveillance system.
Plan and operations of the 10th Korea National Health and Nutrition Examination Survey (2025–2027)
Sun-Ja Kim, Sihyun Park, Sunja Kim, Suyeon Park, Yoonjung Kim, Yunjung Choi, Sungha Yun, Kyungwon Oh
Epidemiol Health. 2026;48:e2026001.   Published online January 2, 2026
DOI: https://doi.org/10.4178/epih.e2026001
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
The Korea National Health and Nutrition Examination Survey (KNHANES) is a national health survey mandated by Article 16 of the National Health Promotion Act to assess the health and nutritional status of the Korean population. Over the past 2 decades, the survey has continuously introduced timely survey components while strengthening its survey methodology and operational systems to enhance both the policy relevance and scientific utility of its findings. The 10th KNHANES (2025–2027) preserves the statistical representativeness of its sampling design while expanding the use of web-based self-administered questionnaires to improve participant convenience. In response to Korea’s transition into a super-aged society, the 10th KNHANES incorporates enhanced older-adult health surveys, including osteoporosis assessment and older adults’ life functioning, and newly introduces items addressing social support as part of the social determinants of health. In addition, a longitudinal follow-up survey system has been established to monitor long-term changes in population health. Collectively, these changes are expected to improve understanding of aging-related health issues, support evidence-based national health policy development, and expand the applicability of KNHANES data for academic research.
Summary
Korean summary
국민건강영양조사는 국민건강증진법 제16조에 근거하여 1998년부터 우리 국민의 건강 및 영양 수준을 파악해 온 국가 단위 건강조사이다. 제10기(2025–2027) 국민건강영양조사는 통계적 대표성을 유지하면서 온라인 조사로의 지속적인 개선·확대, 초고령 사회 등 사회·보건환경 변화에 대응한 신규 조사항목 도입, 추적조사 체계 구축을 통해 국가 건강정책 및 만성질환 예방·관리 전략 수립을 위한 근거 생산을 강화하고자 한다.
Key Message
The Korea National Health and Nutrition Examination Survey (KNHANES) is a national health survey mandated by Article 16 of the National Health Promotion Act that has assessed the health and nutritional status of the Korean population since 1998. The 10th KNHANES (2025–2027) maintains statistical representativeness while further improving and expanding web-based self-administered surveys, incorporating new survey components in response to social and public health changes such as the transition to a super-aged society, and establishing a longitudinal follow-up system to strengthen the evidence base for national health policy development and chronic disease prevention and management.
Cohort Profile
Study protocol for the Korean Human Exposure Safety Survey (KoHESS): a national biomonitoring program for food and consumer product safety
Hyeon-Jeong Lim, Sang-Yong Eom, Sun-Haeng Choi, Seonmi Hong, Byung-Sun Choi, Young-Seoub Hong, Kwan Lee, Won-Ju Park, Jae-Seok Song, Nam-Jun Kim, Hyo-Jeong Hwang, Rihwa Choi, Hosub Im, Youn-Seok Kang, Hye-Young Lee, Mi-Ran Kim, Hyunjin Son, Yong-Dae Kim
Epidemiol Health. 2025;47:e2025060.   Published online October 29, 2025
DOI: https://doi.org/10.4178/epih.e2025060
  • 5,660 View
  • 123 Download
  • 1 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
This protocol paper describes the design and methodology of the Korean Human Exposure Safety Survey (KoHESS), a three-year national biomonitoring program (2023-2025). Korea’s Act on Risk Assessment of Products for Human Use necessitates scientific evidence for aggregate exposure assessment and cumulative risk evaluation of hazardous substances in food and consumer products. Existing biomonitoring programs primarily focus on environmental exposures, limiting comprehensive assessment of products regulated by the Ministry of Food and Drug Safety. KoHESS employs repeated cross-sectional surveys targeting approximately 5,000 Koreans aged 3-79 years per cycle, using complex stratified multistage sampling for national representativeness. Data collection includes standardized anthropometric measurements, biological samples (blood, urine), comprehensive exposure source surveys, and 2-day 24-hour dietary recalls. Chemical analyses using liquid chromatography-tandem mass spectrometry and inductively coupled plasma mass spectrometry measure 24 perfluoroalkyl and polyfluoroalkyl substances compounds, 25 phthalate metabolites, and 7 heavy metals, with quality assurance through certified reference materials. KoHESS will provide scientifically robust data for establishing safety standards, enable advanced exposure modeling, facilitate risk assessments reflecting cumulative exposures, support targeted protection for vulnerable populations, and contribute to international biomonitoring networks while promoting preventive hazardous substance management systems.
Summary
Korean summary
- 식품의약품안전처(MFDS)가 주관하는 KoHESS (2023-2025)는 한국을 대표하는 5,000명의 국민(3~79세)을 대상으로 3년간 반복 수행되는 전국 규모의 인체 모니터링 프로그램이다. - 기존 환경 노출 데이터의 한계를 보완하여 식품 및 소비재 유래 유해 물질(PFAS 24종, 프탈레이트 25종, 중금속 7종)의 인체 노출 수준을 측정한다. - 수집된 과학적 데이터는 유해 물질의 통합 노출 평가, 누적 위해성 평가 및 제품 안전 기준 설정을 위한 핵심 근거 자료로 활용될 것으로 기대된다.
Key Message
- KoHESS (2023-2025) is a national, repeated cross-sectional biomonitoring program led by the Ministry of Food and Drug Safety (MFDS), targeting 5,000 Koreans (3-79 years) per cycle. - It measures 24 PFAS, 25 phthalate metabolites, and 7 heavy metals, specifically focusing on hazardous substances from food and consumer products, filling gaps in existing environmental data. - The data provides robust scientific evidence crucial for aggregate exposure assessment, cumulative risk evaluation, and establishing safety standards for regulated products.

Citations

Citations to this article as recorded by  
  • Development of a Digital Survey Platform for Human Biomonitoring Health Effect Surveys
    Hunjoo Lee
    Journal of Environmental Health Sciences.2026; 52(4): 362.     CrossRef
Original Articles
Personal, community, and societal factors associated with mukbang viewing among adolescents: findings from the Korea Youth Risk Behavior Survey
Cynthia Yursun Yoon, Seungha Shin, Haemi Jun, Hyeeun Park, Minseo Kim
Epidemiol Health. 2025;47:e2025055.   Published online September 30, 2025
DOI: https://doi.org/10.4178/epih.e2025055
  • 6,461 View
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
<i>Mukbang</i> refers to livestreamed videos in which hosts consume large amounts of energy-dense, nutrient-poor foods while interacting with viewers. <i>Mukbang</i> is widely viewed by Korean adolescents and has been associated with adverse health outcomes. To inform efforts to prevent excessive engagement with <i>mukbang</i> content among Korean adolescents, this study examined personal, community, and societal factors associated with excessive <i>mukbang</i> viewing (≥7 times/wk) and explored gender differences in these associations.
METHODS
Data were drawn from the 2022 Korea Youth Risk Behavior Survey (n=36,990; mean age, 15.1±1.7 years; 48.6% girls; 53.2% attending middle school). Self-reported measures included personal (e.g., perceived health, weight, stress, depression, anxiety), community (e.g., living arrangement), and societal factors (e.g., socioeconomic status) and <i>mukbang</i> viewing frequency. Logistic and modified Poisson regression models were used to examine associations with excessive <i>mukbang</i> viewing and to evaluate differences by gender.
RESULTS
Intrapersonal factors—namely perceived health, weight, stress, depression, and anxiety—were associated with excessive <i>mukbang</i> viewing (adjusted prevalence ratios, 1.18 to 1.44), with more pronounced relationships among girls. A community-level factor—living arrangement—displayed a significant association in boys but not in girls. Boys living on campus had 1.42 times the prevalence of excessive <i>mukbang</i> viewing than boys residing with family members (95% confidence interval, 1.08 to 1.88) after adjustment. Further mutual adjustment attenuated estimates toward the null. Societal factors were not significantly associated with excessive <i>mukbang</i> viewing among adolescents.
CONCLUSIONS
Personal and community factors were associated with excessive <i>mukbang</i> viewing. Future research should investigate the mechanisms underlying these associations.
Summary
Korean summary
- 건강 인식 저하, 스트레스, 우울, 불안 등 개인적인 요인은 과도한 먹방 시청과 관련이 있었으며, 특히 여학생에게서 두드러져, 정서적 어려움이 먹방을 정서 조절이나 사회적 연결의 수단으로 활용할 가능성을 시사한다 - 기숙사에 거주하는 남학생이 가족과 거주하는 남학생보다 과도하게 먹방을 시청할 가능성이 높았으며, 이는 또래 영향과 지역사회의 환경이 먹방 시청에 중요한 역할을 함을 보여준다 - 사회경제적 수준은 과도한 먹방 시청과 유의한 관련은 없었으며, 이는 모든 청소년을 대상으로 정서적 건강과 건강한 미디어 사용을 촉진하는 보편적 예방 전략이 필요함을 시사한다
Key Message
- Personal factors such as poor perceived health, stress, depression, and anxiety were strongly related to excessive mukbang viewing, particularly among girls, suggesting that emotional distress may drive girls to engage with mukbang as a form of coping or personal connection - Among boys, those living on campus were more likely to view mukbang excessively than those living with family, indicating that community environment and peer influence may contribute to higher engagement in mukbang - Socioeconomic status was not significantly associated with excessive mukbang viewing, implying that prevention efforts should address emotional well-being and healthy media use across all adolescents, regardless of the background
Trends in sustainable dietary patterns in United States adults, 2007-2018
Sukyoung Jung, Heather A. Young, Barbara H. Braffett, Samuel J. Simmens, Eunice Hong Lim Lee, Cynthia L. Ogden
Epidemiol Health. 2025;47:e2025045.   Published online August 18, 2025
DOI: https://doi.org/10.4178/epih.e2025045
  • 8,682 View
  • 121 Download
  • 1 Web of Science
  • 1 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Adopting sustainable diets is essential for improving both human and planetary health, and such diets should be evaluated from a multidimensional perspective. We characterized trends in sustainable dietary patterns, quantified by the sustainable diet index for United States (SDI-US) adults, along with trends in diet quality, diet-related environmental impacts, food affordability, and food practices.
METHODS
This study analyzed data from the National Health and Nutrition Examination Survey (2007-2018) for adults aged ≥20 years (n=25,543). The SDI-US (range, 4-20 points), with higher scores indicating more sustainable diets, was calculated using 24-hour dietary recall data and responses to consumer and dietary behavior questionnaires. Mean total SDI-US scores, sub-indices, and 12 individual indicators were estimated for each survey cycle. Trends were assessed using orthogonal polynomial contrasts in regression models.
RESULTS
From 2007 to 2018, total SDI-US scores showed no significant overall trend (overall mean, 13.1). Nutritional and socio-cultural indicators remained relatively stable, whereas the economic indicator (food expenditures) worsened from 21.4% to 26.4% (p<0.05, linear trend) between 2007-2008 and 2017-2018. Environmental impacts initially worsened between 2007-2008 and 2013-2014 but improved through 2017-2018 (all p<0.05, quadratic trend). When stratified by age (p for interaction <0.001), a slight decline in SDI-US was observed among adults aged ≥60 years (14.1 to 13.9, p<0.001).
CONCLUSIONS
From 2007 to 2018, total SDI-US scores largely remained unchanged, although declines occurred among adults ≥60 years and scores remained lower among adults aged 20-39 years. Ongoing monitoring and coordinated improvements across all dimensions are needed to advance sustainable diets in all age groups.
Summary
Korean summary
- 본 연구는 미국 국민건강영양조사에 참여한 20세 성인 25,543명을 대상으로 세계식량기구의 다차원적 지속가능한 식이 지수(SDI-US)를 활용하여 12년간의 추이를 분석하였다. - 전체 SDI-US 점수는 전체적으로 큰 변화가 없었으나, 경제적 지표는 악화되고 환경 지표는 최근 개선을 보였고, 60세 이상 성인에서는 SDI-US 점수가 감소하였으며, 20-39세 성인에서는 낮은 수준이 유지되었다. - 지속가능한 식이로의 전환을 위해 지속적 모니터링과 연령대별 맞춤형 정책이 필요하다.
Key Message
Among 25,543 US adults aged 20 years and older, overall sustainable diet index (SDI-US) scores showed no significant change between 2007 and 2018. While food expenditure share worsened and environmental indicators recently improved, declines were observed among older adults (≥60 years) and lower scores persisted among younger adults (20–39 years). These findings highlight the need for ongoing monitoring and tailored strategies to promote sustainable diets across age groups.

Citations

Citations to this article as recorded by  
  • From baseline expectations to high-barrier signals: Mapping Indonesian generation Z's sustainable food consumption through item response theory and motive-based segmentation
    Kristia Kristia, Sándor Kovács, Nádasi Levente Sándor
    Cleaner and Responsible Consumption.2026; 20: 100369.     CrossRef
Health literacy in Korea: findings from the 2023 Korea National Health and Nutrition Examination Survey
Sunhye Choi, Yukyeong Kang, Hyejin Kim, Kyungwon Oh
Epidemiol Health. 2025;47:e2025037.   Published online July 9, 2025
DOI: https://doi.org/10.4178/epih.e2025037
  • 14,427 View
  • 313 Download
  • 7 Web of Science
  • 15 Crossref
AbstractAbstract AbstractSummary PDF
Abstract
OBJECTIVES
This study aimed to assess health literacy and identify vulnerable groups, providing a basis for developing health policies aimed at improving health literacy, using data from the 2023 Korea National Health and Nutrition Examination Survey (KNHANES).
METHODS
The health literacy measurement tool used in the 2023 KNHANES comprised a total of 10 items spanning the domains of disease prevention, health promotion, healthcare, and technology and resources. Health literacy was analyzed in relation to socio-demographic characteristics and major health behaviors among 5,906 adults aged 19 years or older, using the SAS program.
RESULTS
As of 2023, the overall prevalence of adequate health literacy among adults was 60.4%. Adequate health literacy was higher in women (62.2%) than in men (58.6%). Younger individuals exhibited higher levels of health literacy, with those aged 19–64 years at 65.9%, compared to only 40.3% among those aged 65 or older. Higher income and education levels were also associated with greater health literacy. Regarding health behavior characteristics, individuals practicing healthy lifestyles, such as non-smoking, engaging in physical activity, and undergoing health checkups, demonstrated higher health literacy than those who did not engage in such behaviors.
CONCLUSIONS
Six out of 10 Korean adults demonstrated adequate health literacy, but significant differences were observed according to socio-demographic characteristics (e.g., age and education) and health behaviors (e.g., smoking and physical activity). Tailored education and policy initiatives are necessary to improve health literacy, particularly targeting older adults, low-income groups, individuals with lower education, and those who do not practice healthy lifestyles.
Summary
Korean summary
2023년 국민건강영양조사를 통해 우리 국민의 건강정보이해능력을 처음으로 조사한 결과, 우리나라 성인 10명 중 6명은 적절한 건강정보이해능력을 갖고 있었다. 건강정보이해능력은 고령, 낮은 교육수준, 건강생활 비실천 등에서 낮아 취약군의 건강정보이해능력 향상을 위한 맞춤형 교육과 정보 제공 등 다양한 방안 모색이 필요하다.
Key Message
According to the results of the 2023 KNHANES—the first nationwide assessment of health literacy in Korea—6 out of 10 Korean adults had adequate health literacy. Diverse strategies—including targeted education and information provision—are needed to improve health literacy among vulnerable groups such as older adults, those with low education and individuals who do not practice healthy lifestyles.

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  • Influence of Health Literacy and Psychological Well-being on Health Promotion Behavior in Military Personnel
    Dong Jun Lee, Eun Sun So
    Research in Community and Public Health Nursing.2026; 37: 90.     CrossRef
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    Seong-Ah Kim, Seul Ki Choi
    Korean Journal of Health Education and Promotion.2026; 43(1): 1.     CrossRef
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    Sunha Choi, Sungkyu Lee
    Korean Journal of Health Education and Promotion.2026; 43(1): 13.     CrossRef
  • Health Literacy in Primary Care: Global Bibliometric Trends and Opportunities for Asian Low and Middle Income Countries
    Dyah Umiyarni Purnamasari, Atikah Proverawati, Wahyu Vera Wardani
    International Journal of Research and Review.2026; : 109.     CrossRef
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    Oh-Sung Kwon, Young-Kyu Kim
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    Myong-Won Seo
    Frontiers in Public Health.2026;[Epub]     CrossRef
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    Ha Gyeong Lee, Hee Won Seo, Jae Ho Chung, Seung Hwan Lee, Sang-Yoon Han
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    Chang Soo Lee, Mi Ah Han, Seong Woo Choi, So Yeon Ryu
    Journal of Health Informatics and Statistics.2026; 51(2): 83.     CrossRef
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    Myong-Won Seo
    BMC Psychology.2026;[Epub]     CrossRef
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    Korean Journal of Health Promotion.2026; 26(2): 56.     CrossRef
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    Eunok Park
    Journal of Cardiovascular Nursing.2026;[Epub]     CrossRef
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    Hang A. Park, Ki Ok Ahn, Ju Ok Park, Sola Kim
    Frontiers in Public Health.2026;[Epub]     CrossRef
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  • Prevalence and Determinants of Health Literacy among Korean Older Adults: Gender-Specific Differences from a Nationally Representative Study
    In Cheol Hwang, Soo Jung Choi, Yoo Jeong Lee, Hong Yup Ahn
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  • The Effects of Health Literacy, Social Support, and Health-Promoting Behaviors on Metabolic Syndrome Among Middle-Aged and Older Women Living in Rural Areas of Republic of Korea
    Eun-Kyung Lee, Yong-Sook Eo
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The prevention and response to infectious diseases in long-term care facilities in Korea: a nationwide survey
Sun Hee Na, Joong Sik Eom, Sun Bean Kim, Hyung Jin Yoon, So Yeon Yoo, Kyeong Sook Cha, Jong Rim Choi, Ji Youn Choi, Si Hyeon Han, Jin Ju Park, Tark Kim, Jacob Lee
Epidemiol Health. 2024;46:e2024084.   Published online October 17, 2024
DOI: https://doi.org/10.4178/epih.e2024084
  • 17,915 View
  • 188 Download
  • 2 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Long-term care facilities (LTCFs) are communal environments for patients with chronic diseases or older adults, making them particularly susceptible to significant harm during infectious disease outbreaks. Nonetheless, LTCFs have historically been subject to less stringent infection prevention and control (IPC) mandates. This study aimed to assess the current state of LTCFs and to develop an IPC system tailored for these facilities following the coronavirus disease 2019 (COVID-19) pandemic.
METHODS
We conducted an online survey of 11,366 LTCFs in Korea from December 30, 2022 to January 20, 2023, to evaluate the components of IPC in LTCFs. The infectious diseases targeted for IPC included COVID-19, influenza, and scabies. Additionally, we compared institution-based and home-based long-term care insurance facilities.
RESULTS
Overall, 3,537 (31.1%) LTCFs responded to the survey, comprising 1,819 (51.4%) institution-based and 1,718 (48.6%) home-based facilities. A majority (87.4%, 2,376/2,720) of these facilities experienced COVID-19 outbreaks. However, only 42.2% of home-based facilities, in contrast to 90.6% of institution-based facilities, were equipped to manage concurrent COVID-19 cases. Similarly, while 92.1% of institution-based facilities were capable of managing influenza, only 50.5% of home-based facilities could do the same. The incidence of scabies was significantly higher in institution-based facilities than in home-based ones (26.1 vs. 4.3%). Additionally, 88.7% of institution-based facilities managed scabies cases effectively, compared to only 42.1% of home-based facilities.
CONCLUSIONS
Approximately half of the LTCFs had a basic capacity to respond to infectious diseases. However, there were differences in response capabilities between institution-based facilities and home-based facilities.
Summary
Korean summary
장기요양기관을 대상으로 실태조사가 시행되었습니다. 50% 기관에서 감염병에 대한 기본 대응능력을 가지고 있었지만 시설급여기관과 재가급여기관 사이 대응능력에 차이가 있었습니다.
Key Message
A survey of long-term care facilities (LTCFs) was conducted. Fifty per cent of LTCFs had a basic capacity to respond to infectious diseases. However, there were differences in response capacity between institution-based and home-based facilities.

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  • 2025년 서산시 노인요양시설 환기 실태 및 SARS-CoV-2 공기전파 위험도 평가
    대희 한, 지애 임, 상욱 우, 혜진 강, 수진 김, 유호 최, 보람 김, 동권 최, 오현 조
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Development and validation of the Health Literacy Index for the Community for the Korean National Health and Nutrition and Examination Survey
Junghee Yoon, Soo Jin Kang, Mangyeong Lee, Juhee Cho
Epidemiol Health. 2024;46:e2024061.   Published online July 10, 2024
DOI: https://doi.org/10.4178/epih.e2024061
  • 23,903 View
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  • 17 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We developed and validated the Health Literacy Index for the Community (HLIC) to assess the health literacy of the Korean population within the framework of the Korean National Health and Nutrition and Examination Survey.
METHODS
The HLIC was developed through (1) defining the conceptual framework and generating the item pool and (2) finalizing the items and identifying the cut-off value. Interviews were conducted to examine items’ face validity, and a cross-sectional survey was performed to analyze the item-response theory and Rasch models to investigate the instrument’s psychometric properties.
RESULTS
In this study of 1,041 participants, most had no difficulty understanding health information; however, 67.9% struggled to assess the reliability of health information from the Internet or media. A 4-factor structure was identified through factor analysis, leading to the exclusion of some items. This resulted in 10 items across 4 domains: (1) disease prevention, (2) health promotion, (3) health care, and (4) technology and resources. The HLIC demonstrated good internal consistency, with a Cronbach’s α of 0.87. It also showed high test-retest reliability and correlations with other health literacy instruments. A socio-demographic analysis of the HLIC revealed disparities in health literacy across various age groups, education levels, and income brackets.
CONCLUSIONS
The HLIC was developed to systematically measure health literacy in Korea’s general population. Its simplicity and conciseness ensure reliability and validity and improve its accessibility, making it particularly suitable for the broader Korean population, including those with lower literacy levels.
Summary
Korean summary
본 연구는 한국인의 건강 문해력을 평가하기 위해 지역사회 건강정보 이해능력 측정도구(Health Literacy Index for the Community, HLIC)를 개발하고 검증하였다. 그 결과, 많은 사람들이 인터 넷이나 미디어에서 얻은 정보의 신뢰성을 평가하는 데 어려움을 겪고 있으며, 연령, 교육 수준, 소 득에 따라 건강정보 이해능력 격차가 존재함을 확인하였다. 특히 본 도구는 높은 신뢰도와 타당성 을 입증하였으며, 이를 통해 한국인의 격차를 파악하고 맞춤형 개입을 위한 중요한 정보를 제공하 는 도구로서의 유용성을 확인하였다.
Key Message
This study developed and validated the Health Literacy Index for the Community (HLIC) to assess the health literacy of Koreans, finding that many had difficulties to assess its reliability from Internet or media sources, and disparities in health literacy were observed across age, education level, and income. The HLIC demonstrated strong reliability and validity, highlighting its utility for identifying health literacy gaps and informing targeted interventions in Korea.

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Special Article
Nutrition survey methods and food composition database update of the Korean Genome and Epidemiology Study
Seon-Joo Park, Jieun Lyu, Kyoungho Lee, Hae-Jeung Lee, Hyun-Young Park
Epidemiol Health. 2024;46:e2024042.   Published online April 2, 2024
DOI: https://doi.org/10.4178/epih.e2024042
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
This study presents the nutrition survey methods and the updated food composition database for the Korean Genome and Epidemiology Study (KoGES). The KoGES, which is the largest and longest cohort study in Korea, aims to identify genetic and environmental factors associated with chronic diseases. This study has collected dietary data using a validated semi-quantitative food frequency questionnaire and/or the 24-hour recall method. However, these dietary survey methods use different food composition databases, and their nutritional values are out of date. Therefore, it became necessary to update the food composition database by revising nutrient analysis values to reflect improvements in the performance of food ingredient analysis equipment, revising international values to analysis values of Korean agricultural products, adjusting nutrient units, and adding newly reported nutrients related to chronic diseases. For this purpose, we integrated the different food composition databases used in each nutrition survey, updated 23 nutrients, and expanded 48 new nutrients for 3,648 food items using the latest reliable food composition databases published by national and international institutions. This revised food composition database may help to clarify the relationship between various nutrients and chronic diseases. It could serve as a valuable resource for nutritional, epidemiological, and genomic research and provide a basis for determining public health policies.
Summary
Korean summary
한국인유전체역학조사사업은 우리나라에서 가장 크고 오래된 코호트로 만성질환과 영양과의 관련성을 밝히기 위하여 사용되고 있다. 이 논문에서는 영양조사에 대한 자세한 방법론과 현재 공개하고 있는 23개 영양소의 업데이트 및 48개 새로운 영양소의 확대에 대한 내용을 소개하였다. 이러한 개선을 통해 KoGES 영양 데이터의 활용도가 더욱 높아질 것으로 기대된다.
Key Message
The Korean Genome and Epidemiology Study (KoGES) is the largest and longest-running cohort study in South Korea aimed at identifying the relationship between chronic diseases and nutrient intake. This paper provides a detailed methods of the nutritional surveys and introduces updates to the existing 23 nutrients and the addition of 48 new nutrients. These enhancements are expected to significantly increase the utility of the KoGES nutritional data.

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Original Articles
Association between dietary and behavioral-based oxidative balance score and phenotypic age acceleration: a cross-sectional study of Americans
Dongzhe Wu, Yulin Shen, Chaoyi Qu, Peng Huang, Xue Geng, Jianhong Zhang, Zhijian Rao, Qiangman Wei, Shijie Liu, Jiexiu Zhao
Epidemiol Health. 2024;46:e2024023.   Published online January 18, 2024
DOI: https://doi.org/10.4178/epih.e2024023
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
In light of the rise in the global aging population, this study investigated the potential of the oxidative balance score (OBS) as an indicator of phenotypic age acceleration (PhenoAgeAccel) to better understand and potentially slow down aging.
METHODS
Utilizing data from the National Health and Nutrition Examination Survey collected between 2001 and 2010, including 13,142 United States adults (48.7% female and 51.2% male) aged 20 and above, OBS and PhenoAgeAccel were calculated. Weighted generalized linear regression models were employed to explore the associations between OBS and PhenoAgeAccel, including a sex-specific analysis.
RESULTS
The OBS demonstrated significant variability across various demographic and health-related factors. There was a clear negative correlation observed between the higher OBS quartiles and PhenoAgeAccel, which presented sex-specific results: the negative association between OBS and PhenoAgeAccel was more pronounced in male than in female. An analysis using restricted cubic splines revealed no significant non-linear relationships. Interaction effects were noted solely in the context of sex and hyperlipidemia.
CONCLUSIONS
A higher OBS was significantly associated with a slower aging process, as measured by lower PhenoAgeAccel. These findings underscore the importance of OBS as a biomarker in the study of aging and point to sex and hyperlipidemia as variables that may affect this association. Additional research is required to confirm these results and to investigate the biological underpinnings of this relationship.
Summary
Key Message
• The study found a significant negative correlation between the oxidative balance score (OBS) and phenotypic age acceleration (PhenoAgeAccel), with higher OBS associated with slower biological aging. This association was more pronounced in males, and significant in individuals with high cholesterol.
• OBS can serve as an effective biomarker for studying the aging process and its association with lifestyle and dietary factors.

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Determinants of unhealthy living by gender, age group, and chronic health conditions across districts in Korea using the 2010-2017 Community Health Surveys
Thi Tra Bui, Thi Huyen Trang Nguyen, Jinhee Lee, Sun Young Kim, Jin-Kyoung Oh
Epidemiol Health. 2024;46:e2024014.   Published online January 4, 2024
DOI: https://doi.org/10.4178/epih.e2024014
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We investigated the prevalence and determinants of unhealthy living by gender, age, and comorbidities across Korean districts.
METHODS
For 806,246 men and 923,260 women from 245 districts who participated in the 2010-2017 Korean Community Health Surveys, risk scores were calculated based on obesity, physical inactivity, smoking, and high-risk alcohol consumption, each scored from 0 (lowest risk) to 2 (highest risk). A risk score ≥4 was defined as indicating unhealthy living, and weighted proportions were calculated for each district. Using multivariate regression, an ecological model including community socioeconomic, interpersonal, and neighborhood factors was examined by gender, age, and comorbidities.
RESULTS
The mean age-standardized rate of unhealthy living was 24.05% for men and 4.91% for women (coefficients of variation, 13.94% and 29.51%, respectively). Individuals with chronic diseases more frequently exhibited unhealthy lifestyles. Unhealthy lifestyles were associated with educational attainment (β-coefficients: men, -0.21; women, -0.15), high household income (β=0.08 and 0.03, respectively), pub density (β=0.52 and 0.22, respectively), and fast-food outlet density (β=2.81 and 1.63, respectively). Negative associations were observed with manual labor, social activity participation, and hospital bed density. Unhealthy living was positively associated with living alone among women and with being unemployed among middle-aged men. Access to parks was negatively associated with unhealthy living among young men and women. The ecological model explained 32% of regional variation in men and 41% in women.
CONCLUSIONS
Improving the neighborhood built and socioeconomic environment may reduce regional disparities in lifestyle behaviors; however, the impacts may vary according to socio-demographic traits and comorbidities.
Summary
Korean summary
- 시군구 지역단위의 불건강생활(흡연, 음주, 비만, 신체활동 부족 각 0-2점, 합 4점 이상 불건강) 유병률은 여자보다 남자에서 높고, 연령이 높아지면서 감소한다. - 지역사회 환경개선(술집 개수, 패스트푸드점 밀도, 공원 면적, 병상밀도)과 사회경제적 수준 강화(교육수준, 가구소득, 고용)를 통해 생활습관적 건강행태의 지역 격차를 줄일 수 있다. - 이러한 향상 노력의 효과는 지역의 건강상태 수준이나 사회인구학적 특성에 따라 다를 수 있다.
Key Message
• District prevalence rates of unhealthy living were higher among men than women and decreased with advancing age. • Efforts to reduce regional disparities in lifestyle behaviors could benefit from enhancements to the neighborhood environment and the socioeconomic status of the area. • The effectiveness of such improvements may vary based on socio-demographic characteristics and health conditions.

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Folate, vitamin B12, and homocysteine status in the Korean population: data from the 2013-2015 Korea National Health and Nutrition Examination Survey
Sihan Song, Bo Mi Song, Hyun-Young Park
Epidemiol Health. 2024;46:e2024007.   Published online December 11, 2023
DOI: https://doi.org/10.4178/epih.e2024007
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We aimed to assess the serum folate, vitamin B12, and homocysteine status in Korean adolescents and adults using national data.
METHODS
Blood samples were collected from participants aged ≥10 years in the Korea National Health and Nutrition Examination Survey 2013-2015. The stored serum samples were used to measure folate, vitamin B12, and homocysteine concentrations. A total of 8,016 participants were included in this analysis. Unweighted descriptive statistics and adjusted geometric means of the B vitamins and homocysteine concentrations were estimated.
RESULTS
Females had higher serum folate and vitamin B12 concentrations and lower serum homocysteine concentrations than males. Folate deficiency (<6.8 nmol/L) and hyperhomocysteinemia (>15 μmol/L) were found in 8.6% and 11.8% of males, respectively. Approximately 3% of males had low or marginally low vitamin B12 status (≤221 pmol/L). Folate and vitamin B12 deficiencies and hyperhomocysteinemia were found in <2% of females. Suboptimal folate status was prevalent among adolescents and young adults, while suboptimal vitamin B12 status and hyperhomocysteinemia were relatively higher in older adults. Adjusted mean homocysteine concentrations were sharply decreased from the first to second decile of serum folate in males.
CONCLUSIONS
In the Korean population, the proportion of males who achieved desirable folate and homocysteine concentrations were lower than those of females. Although most Koreans have adequate vitamin B12, a suboptimal folate status is common, particularly among adolescents and young adults. These findings could establish a foundation for public health initiatives aimed at improving folate levels in the Korean population.
Summary
Korean summary
엽산과 비타민B12는 전 생애에 걸쳐 건강에 영향을 미치는 필수 비타민이다. 그러나 해당 비타민 상태에 대한 국내 자료는 부족한 실정이다. 본 연구는 국민건강영양조사 참여자로부터 수집된 혈청으로부터 엽산, 비타민B12, 그리고 이들의 기능성 지표인 호모시스테인 농도를 측정하였고 성별과 연령별 분포와 적합 상태를 평가하였다. 엽산 결핍과 고호모시스테인혈증은 남성에서 높은 유병률을 가졌다. 적정 엽산 상태를 충족하지 못하는 비율은 청소년과 젊은 성인에서 흔하게 관찰되었다. 대부분의 한국인은 충분한 비타민B12 수준을 가졌으나, 노인의 경우 정기적인 평가가 필요하다. 본 연구는 한국인이 최적의 엽산과 비타민B12 상태를 유지하기 위한 기반적 근거를 제공한다.
Key Message
Folate and vitamin B12 have significant health impacts throughout the life cycle. However, national-level data on B vitamins in Korea are limited. Serum folate, vitamin B12, and homocysteine concentrations were measured from samples stored during the national survey. In our study, the proportions of folate deficiency and hyperhomocysteinemia were higher in men than in women.Suboptimal folate status was common among adolescents and young adults. Most Koreans had adequate levels of vitamin B12; however, regular monitoring is warranted, especially in the older population. The current data provide a future direction for achieving optimal B vitamin status in the Korean population.

Citations

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    Yeon Joo Lee, Hyun Ju Kim, Seon Ah Sim
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Trends in the effects of socioeconomic position on physical activity levels and sedentary behavior among Korean adolescents
Hunju Lee, Hyowon Choi, Sang Baek Koh, Hyeon Chang Kim
Epidemiol Health. 2023;45:e2023085.   Published online September 8, 2023
DOI: https://doi.org/10.4178/epih.e2023085
  • 26,105 View
  • 242 Download
  • 15 Web of Science
  • 17 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We examined trends in physical activity and sedentary behavior in Korean adolescents, and their association with socioeconomic position (SEP).
METHODS
We used data from the Korea Youth Risk Behavior Survey, a nationwide study involving students aged 12-19 conducted between 2009 and 2021. SEP was assessed based on economic status, parental education attainment, and urbanization. Physical activity was categorized into vigorous physical activity, moderate physical activity, and muscle training, and sedentary time was also measured. We conducted the log-binomial regression to calculate prevalence ratios (PRs) and prevalence differences.
RESULTS
Our analysis included a total of 593,896 students. We observed an increasing trend in physical activity, but a worsening trend in sedentary behavior. A positive association was found between an adolescent’s physical activity and SEP indicators, except for urbanization. Adolescents with higher economic status engaged in more vigorous physical activity (high: PR, 1.26; 95% confidence interval [CI], 1.25 to 1.28; middle: PR, 1.03; 95% CI, 1.02 to 1.04). Similar associations were observed for father’s education (tertiary or above: PR, 1.11; 95% CI, 1.09 to 1.13; upper secondary: PR, 1.05; 95% CI, 1.03 to 1.07) and mother’s education (tertiary or above: PR, 1.17; 95% CI, 1.15 to 1.20; upper secondary: PR, 1.06; 95% CI, 1.04 to 1.08). Adolescents with higher economic status also showed a higher compliance rate with the guideline restricting sedentary time to 2 hours per day (high: PR, 1.28; 95% CI, 1.25 to 1.30; middle: PR, 1.03; 95% CI, 1.01 to 1.05).
CONCLUSIONS
Adolescents with higher SEP exhibited more physical activity and less sedentary time than those with lower SEP.
Summary
Korean summary
본 연구는 2009년부터 2021년까지 청소년의 사회경제적 지위가 신체활동과 좌식생활습관에 미치는 영향을 분석하였다. 청소년의 경제적 상태, 아버지와 어머니의 교육수준이 높을수록 청소년의 신체활동이 증가하고 좌식생활이 감소하였다. 그러나 청소년이 사는 지역의 도시화 정도는 영향을 미치지 않았다.
Key Message
This article analyzes the effects of an adolescent's socio-economic position on their physical activity and sedentary behavior from 2009 to 2021. The higher the adolescent's economic status, father's education, or mother's education, the more they engaged in physical activity and the less time they spent in sedentary behaviors. However, the level of urbanization in the area where the adolescent resided had no effect.

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    Eunhui Kim, Chae-Been Kim, Seungho Ryu
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Korea Seroprevalence Study of Monitoring of SARS-COV-2 Antibody Retention and Transmission (K-SEROSMART): findings from national representative sample
Jina Han, Hye Jin Baek, Eunbi Noh, Kyuhyun Yoon, Jung Ae Kim, Sukhyun Ryu, Kay O Lee, No Yai Park, Eunok Jung, Sangil Kim, Hyukmin Lee, Yoo-Sung Hwang, Jaehun Jung, Hun Jae Lee, Sung-il Cho, Sangcheol Oh, Migyeong Kim, Chang-Mo Oh, Byengchul Yu, Young-Seoub Hong, Keonyeop Kim, Sun Jae Jung, Mi Ah Han, Moo-Sik Lee, Jung-Jeung Lee, Young Hwangbo, Hyeon Woo Yim, Yu-Mi Kim, Joongyub Lee, Weon-Young Lee, Jae-Hyun Park, Sungsoo Oh, Heui Sug Jo, Hyeongsu Kim, Gilwon Kang, Hae-Sung Nam, Ju-Hyung Lee, Gyung-Jae Oh, Min-Ho Shin, Soyeon Ryu, Tae-Yoon Hwang, Soon-Woo Park, Sang Kyu Kim, Roma Seol, Ki-Soo Park, Su Young Kim, Jun-wook Kwon, Sung Soon Kim, Byoungguk Kim, June-Woo Lee, Eun Young Jang, Ah-Ra Kim, Jeonghyun Nam, The Korea Community Health Survey Group, Soon Young Lee, Dong-Hyun Kim
Epidemiol Health. 2023;45:e2023075.   Published online August 17, 2023
DOI: https://doi.org/10.4178/epih.e2023075
  • 28,898 View
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We estimated the population prevalence of antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), including unreported infections, through a Korea Seroprevalence Study of Monitoring of SARS-CoV-2 Antibody Retention and Transmission (K-SEROSMART) in 258 communities throughout Korea.
METHODS
In August 2022, a survey was conducted among 10,000 household members aged 5 years and older, in households selected through two stage probability random sampling. During face-to-face household interviews, participants self-reported their health status, COVID-19 diagnosis and vaccination history, and general characteristics. Subsequently, participants visited a community health center or medical clinic for blood sampling. Blood samples were analyzed for the presence of antibodies to spike proteins (anti-S) and antibodies to nucleocapsid proteins (anti-N) SARS-CoV-2 proteins using an electrochemiluminescence immunoassay. To estimate the population prevalence, the PROC SURVEYMEANS statistical procedure was employed, with weighting to reflect demographic data from July 2022.
RESULTS
In total, 9,945 individuals from 5,041 households were surveyed across 258 communities, representing all basic local governments in Korea. The overall population-adjusted prevalence rates of anti-S and anti-N were 97.6% and 57.1%, respectively. Since the Korea Disease Control and Prevention Agency has reported a cumulative incidence of confirmed cases of 37.8% through July 31, 2022, the proportion of unreported infections among all COVID-19 infection was suggested to be 33.9%.
CONCLUSIONS
The K-SEROSMART represents the first nationwide, community-based seroepidemiologic survey of COVID-19, confirming that most individuals possess antibodies to SARS-CoV-2 and that a significant number of unreported cases existed. Furthermore, this study lays the foundation for a surveillance system to continuously monitor transmission at the community level and the response to COVID-19.
Summary
Korean summary
인구집단을 기반으로 하여 대표성 있는 표본을 추출하여 COVID-19 항체유병률 조사를 전국적으로 수행함으로 지역사회 단위에서 지속적으로 모니터링할 수 있는 COVID-19 감시체계 구축의 기반을 마련하였다. 2022년 8월 우리나라 국민의 대부분이 COVID-19에 대한 항체를 보유하고 있었고 인구 3명 중 1명은 미확진 감염자로 추정되었다.
Key Message
The K-SEROSMART represents the first nationwide, community-based seroepidemiologic survey of COVID-19. In August 2022, most of the Korean people had antibodies to COVID-19, and one in three people was estimated to have an unreported infection. This study lays the foundation for a surveillance system to continuously monitor transmission at the community level and the response to COVID-19.

Citations

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  • Influenza Vaccine Effectiveness in Korean Children: A Registry-Linked, Survey-Based Population Study (2023–2024)
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    Suyoung Jo, Seunghyun Lee, Huiseon Kim, Hyunji Won, Gi-eun Rhie, Hye-Sook Jeong, June-Woo Lee, Ah-Ra Kim, Byung Chul Chun, Kyong Ran Peck, Dong-Hyun Kim
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    Yumi Jang, Jaehun Jung, Kyong Ran Peck
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    Young Hoon Hwang, Wan Beom Park
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Cohort Profile
Epidemiologic Questionnaire (EPI-Q) – a scalable, app-based health survey linked to electronic health record and genotype data
Maxwell Salvatore, Dylan Clark-Boucher, Lars G. Fritsche, Jacob Ortlieb, Janet Houghtby, Anisa Driscoll, Bryanne Caldwell-Larkins, Jennifer A. Smith, Chad M. Brummett, Sachin Kheterpal, Lynda Lisabeth, Bhramar Mukherjee
Epidemiol Health. 2023;45:e2023074.   Published online August 8, 2023
DOI: https://doi.org/10.4178/epih.e2023074
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
The Epidemiologic Questionnaire (EPI-Q) was established to collect broad, uniform, self-reported health data to supplement electronic health record (EHR) and genotype information from participants in the University of Michigan (UM) Precision Health cohorts. Recruitment of EPI-Q participants, who were already enrolled in 1 of 3 ongoing UM Precision Health cohorts—the Michigan Genomics Initiative, Mental Health Biobank, and Metabolism, Endocrinology, and Diabetes cohorts—began in March 2020. Of 54,043 retrospective invitations, 5,577 individuals enrolled, representing a 10.3% response rate. Of these, 3,502 (63.7%) were female, and the average age was 56.1 years (standard deviation, 15.4). The baseline survey comprises 11 modules on topics including personal and family health history, lifestyle, and cancer screening and history. Additionally, 11 optional modules cover topics including financial toxicity, occupational exposure, and life meaning. The questions are based on standardized and validated instruments used in other cohorts, and we share resources to expedite development of similar surveys. Data are collected via the MyDataHelps platform, which enables current and future participants to share non-Michigan Medicine EHR data. Recruitment is ongoing. Cohort data are available to those with institutional review board approval; for details, contact the Data Office for Clinical and Translational Research (DataOffice@umich.edu).
Summary
Key Message
The Epidemiologic Questionnaire (EPI-Q) is an app-based, scalable health survey that collects broad, self-reported data to augment an electronic health record-linked biobank – the Michigan Genomics Initiative. Of an initial 54,043 invitations (recruitment is ongoing), 5,577 participants enrolled (10.3% response rate) and were invited to complete 11 baseline modules (including personal and family health history, lifestyle, and cancer screening and history) and 11 optional modules (including financial toxicity, occupational exposure, and life meaning). Questions are based on standardized and validated instruments used in other cohort studies and documentation is shared publicly to accelerate development of similar surveys.

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  • Outcome and Exposure Polygenic Risk Scores Can Help Reduce Information Bias and Selection Bias in Regression Estimates From Biobank Data
    Maxwell Salvatore, Ritoban Kundu, Jiacong Du, Christopher R. Friese, Alison M. Mondul, David Hanauer, Haidong Lu, Celeste Leigh Pearce, Bhramar Mukherjee
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COVID-19: Original Article
Barriers to COVID-19 vaccine surveillance: the issue of under-reporting adverse events
Yunha Noh, Hwa Yeon Ko, Ju Hwan Kim, Dongwon Yoon, Young June Choe, Seung-Ah Choe, Jaehun Jung, Ju-Young Shin
Epidemiol Health. 2023;45:e2023054.   Published online June 7, 2023
DOI: https://doi.org/10.4178/epih.e2023054
  • 25,648 View
  • 170 Download
  • 10 Web of Science
  • 11 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study investigated the reporting rates of adverse events following immunization (AEFIs) to the spontaneous reporting system (SRS) and its predictors among individuals with AEFIs after coronavirus disease 2019 (COVID-19) vaccination.
METHODS
A cross-sectional, web-based survey was conducted from December 2, 2021 to December 20, 2021, recruiting participants >14 days after completion of a primary COVID-19 vaccination series. Reporting rates were calculated by dividing the number of participants who reported AEFIs to the SRS by the total number of participants who experienced AEFIs. We estimated adjusted odds ratios (aORs) using multivariate logistic regression to determine factors associated with spontaneous AEFIs reporting.
RESULTS
Among 2,993 participants, 90.9% and 88.7% experienced AEFIs after the first and second vaccine doses, respectively (reporting rates, 11.6 and 12.7%). Furthermore, 3.3% and 4.2% suffered moderate to severe AEFIs, respectively (reporting rates, 50.5 and 50.0%). Spontaneous reporting was more prevalent in female (aOR, 1.54; 95% confidence interval [CI], 1.31 to 1.81); those with moderate to severe AEFIs (aOR, 5.47; 95% CI, 4.45 to 6.73), comorbidities (aOR, 1.31; 95% CI, 1.09 to 1.57), a history of severe allergic reactions (aOR, 2.02; 95% CI, 1.47 to 2.77); and those who had received mRNA-1273 (aOR, 1.25; 95% CI, 1.05 to 1.49) or ChAdOx1 (aOR, 1.62; 95% CI, 1.15 to 2.30) vaccines versus BNT162b2. Reporting was less likely in older individuals (aOR, 0.98; 95% CI, 0.98 to 0.99 per 1-year age increment).
CONCLUSIONS
Spontaneous reporting of AEFIs after COVID-19 vaccination was associated with younger age, female sex, moderate to severe AEFIs, comorbidities, history of allergic reactions, and vaccine type. AEFIs under-reporting should be considered when delivering information to the community and in public health decision-making.
Summary
Korean summary
본 연구는 국내 19-49세 성인을 대상으로, 코로나19 예방 백신 접종 후 이상반응 경험에 대한 자발적 보고율을 조사하고, 자발적 보고와 관련된 요인을 파악하고자 하였다. 2021년 12월 2일부터 20일까지 온라인 설문조사를 통하여 자료를 수집하였으며, 연구대상자는 코로나19 예방 백신의 기초접종을 완료한 후 2주 경과한 19-49세 성인으로, 전국 대표성을 확보하기 위해 성별, 연령, 지역별로 층화하여 모집하였다. 이상반응 자발적 보고율은 1차 접종과 2차 접종 후 각각 약 11.6%, 12.7%로 나타났으며, 중등도에서 중증의 이상반응에 대한 자발적 보고율은 약 50.5%, 50.0%로 나타났다. 이상반응 자발적 보고율 관련 영향요인으로는 젊은 연령층, 여성, 이상반응의 중증도, 동반질환, 알러지 반응 이력, 기초접종 백신 종류가 포함되었다.
Key Message
Spontaneous reporting rates of adverse events following immunization (AEFIs) against coronavirus disease 2019 (COVID-19) were low, at around 12 % of any AEFIs and 50 % of moderate-to-severe AEFIs. Younger age, female sex, severe AEFIs, comorbidities, history of allergic reactions, and the type of COVID-19 vaccine were associated with the AEFIs reporting.

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Original Articles
Association of the dietary inflammatory index with phenotypic age in the United States adults
Mengzi Sun, Jiaxin Fang, Wenhui Gao, Yue He, Yanan Ma, Lina Jin
Epidemiol Health. 2023;45:e2023051.   Published online May 4, 2023
DOI: https://doi.org/10.4178/epih.e2023051
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
One of the underlying mechanisms of aging is chronic inflammation, which has been closely associated with daily diet. Phenotypic age (PhenoAge) has been used as an index to track the aging process before diseases show clinical symptoms. The present study aimed to explore the association between the dietary inflammatory index (DII) and PhenoAge.
METHODS
In total, 9,275 adults aged 20 years old and over in the National Health and Nutrition Examination Survey were involved in this study. Dietary patterns were classified as pro-inflammatory or anti-inflammatory according to the DII. PhenoAge was regarded as a continuous variable, and linear regression was used to explore its association with dietary inflammation. Stratified analyses by sex, age, race, physical exercise, smoking status, drinking status, and body mass index were used to test the sensitivity of these associations.
RESULTS
The median value of PhenoAge was 38.60 years and 39.76 years for the participants with anti-inflammatory and pro-inflammatory diets, respectively. A pro-inflammatory diet was positively associated with PhenoAge (β=0.73; 95% confidence interval, 0.31 to 1.14), compared with participants who had an anti-inflammatory diet. There was an interaction between dietary inflammation and age for PhenoAge (p<sub>interaction</sub><0.001). The strength of the association between a pro-inflammatory diet and PhenoAge was stronger as age increased.
CONCLUSIONS
A pro-inflammatory diet was associated with a higher PhenoAge, and the association was strongest in the elderly. We recommended reducing dietary inflammation to delay phenotypic aging, especially for the elderly.
Summary
Key Message
One of the underlying mechanisms of aging is chronic inflammation, which has been closely associated with daily diet, and phenotypic age (PhenoAge) has been used as an index to track the aging process before diseases show clinical symptoms. The present study found that a pro-inflammatory diet was associated with a higher PhenoAge, and the association was strongest in the elderly. We recommended reducing dietary inflammation to delay phenotypic aging, especially for the elderly.

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Associations of breastfeeding duration and the total number of children breastfed with self-reported osteoarthritis in Korea women 50 years and older: a cross-sectional study
Dajeong Ham, Sanghyuk Bae
Epidemiol Health. 2023;45:e2023044.   Published online April 13, 2023
DOI: https://doi.org/10.4178/epih.e2023044
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Osteoarthritis is the most common joint disease, with a higher prevalence among women than men. The present study aimed to examine the associations of breastfeeding duration and the total number of children breastfed with osteoarthritis in Korean women aged 50 years and older.
METHODS
In this cross-sectional study, we used representative data from the Korea National Health and Nutrition Examination Survey, phases 5 through 7 (2010-2018). Our analysis included 10,102 women aged ≥50 years. Osteoarthritis experience was defined as whether a physician had ever diagnosed osteoarthritis. Breastfeeding duration was categorized as 1-6 months, 7-24 months, and ≥25 months. The total number of children breastfed was categorized as 1-2, 3-4, and ≥5. The covariates were health behavior characteristics and risks of diseases (smoking, drinking, physical activity, body mass index, diabetes, hypertension, oral contraceptive use, and menopause) as well as socioeconomic characteristics (income, educational level, and occupation). A multiple logistic regression model was used to investigate associations between osteoarthritis and aspects of breastfeeding experience.
RESULTS
Compared to the non-breastfeeding group, the breastfeeding group had an odds ratio (OR) of 1.55 (95% confidence interval [CI], 1.18 to 2.03) for osteoarthritis. Those who reported breastfeeding for >25 months had an OR of 1.56 (95% CI, 1.19 to 2.06).
CONCLUSIONS
The advantages of breastfeeding are already well known, but the present study suggests that women who breastfeed children for a longer time may have a higher risk of osteoarthritis after middle age.
Summary
Korean summary
골관절염은 가장 흔한 관절 질환이며 유병률은 여성에서 더 높다. 본 연구는 국민건강영양조사의 50세 이상 여성 10,130명을 대상으로 모유수유경험과 골관절염의 유병율 사이의 연관성을 분석하였다. 모유 수유의 이점은 이미 잘 알려져 있지만, 모유 수유 기간이 길수록 골관절염에 걸릴 가능성이 더 높음을 관찰하였다.
Key Message
Osteoarthritis is one of the most common disorders in elderly women and identifying risk factors may contribute to screening and early treatment. In the present article, we analyzed the association of breastfeeding and related factors with prevalent osteoarthritis in Korea National Health and Nutrition Examination Survey. The advantages of breastfeeding are already well known, but we observed that the longer the breastfeeding duration was the more likely the woman has osteoarthritis.

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    Maritza Vidal, Nancy E Lane
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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
  • 65,535 View
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  • 9 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary 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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Physical activity, sedentary behavior, and cardiovascular disease risk in Korea: a trajectory analysis
Jina Han, Yeong Jun Ju, Soon Young Lee
Epidemiol Health. 2023;45:e2023028.   Published online February 22, 2023
DOI: https://doi.org/10.4178/epih.e2023028
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AbstractAbstract PDF
Abstract
OBJECTIVES
To identify the distinct trajectories of sedentary behavior (SB) and explore whether reduced cardiovascular disease (CVD) risk was associated with a distinct trajectory of physical activity (PA).
METHODS
We analyzed data from 6,425 people who participated in the Korean Health Panel Survey over a period of 10 years. The participants’ self-reported SB and PA were assessed annually, and trajectory groups were identified using a group-based trajectory model for longitudinal data analysis. Logistic regression analysis was performed to assess the association between CVD risk (10-year cumulative incidence) and the trajectories of SB and PA. The adjusted variables included socio-demographic factors, the predisposing diseases of CVD, and baseline health behaviors.
RESULTS
Trajectory analysis identified 4 SB trajectory groups: SB group 1 (low and slightly increasing trend, 53.1%), SB group 2 (high and rapidly decreasing trend, 14.7%), SB group 3 (high and slightly decreasing trend, 9.9%), and SB group 4 (low and rapidly increasing trend, 22.2%). The 3 PA trajectory groups were PA group 1 (moderate and slightly decreasing trend, 32.1%), PA group 2 (low and slightly decreasing trend, 57.3%), and PA group 3 (maintained inactivity, 10.7%). By the 10-year follow-up, 577 cases of incident CVD had occurred. We also noted a 50% reduction in the risk of CVD when SB group 4 was accompanied by PA group 1 (odds ratio, 0.50; 95% confidence interval, 0.28 to 0.90).
CONCLUSIONS
Despite increased time spent in SB, maintaining PA about 2 days to 3 days per week reduced the occurrence of CVD.
Summary

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Trends and all-cause mortality associated with multimorbidity of non-communicable diseases among adults in the United States, 1999-2018: a retrospective cohort study
Mengzi Sun, Ling Wang, Xuhan Wang, Li Tong, Lina Jin, Bo Li
Epidemiol Health. 2023;45:e2023023.   Published online February 14, 2023
DOI: https://doi.org/10.4178/epih.e2023023
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Multimorbidity of non-communicable diseases (NCDs) has brought enormous challenges to public health, becoming a major medical burden. However, the patterns, temporal trends, and all-cause mortality associated with NCD multimorbidity over time have not been well described in the United States.
METHODS
All adult participants were sourced from nationally representative data from the National Health and Nutrition Examination Survey. In total, 55,081 participants were included in trend analysis, and 38,977 participants were included in Cox regression.
RESULTS
The 5 NCDs with the largest increases over the study period were diabetes, osteoporosis, obesity, liver conditions, and cancer. The estimated prevalence of multimorbidity increased with age, especially for middle-aged participants with 5 or more NCDs; in general, the prevalence of NCD multimorbidity was higher among females than males. Participants with 5 or more NCDs were at 4.49 times the risk of all-cause mortality of participants without any diseases. Significant interactions were found between multimorbidity and age group (p for interaction <0.001), race/ethnicity (p for interaction<0.001), and educational attainment (p for interaction=0.010).
CONCLUSIONS
The prevalence of multiple NCDs significantly increased from 1999 to 2018. Those with 5 or more NCDs had the highest risk of all-cause mortality, especially among the young population. The data reported by this study could serve as a reference for additional NCD research.
Summary
Key Message
This study included a series-cross sectional study and a retrospective cohort study, utilizing nationally representative data from the National Health and Nutrition Examination Survey (NHANES). Multimorbidity of non-communicable diseases (NCDs) has brought enormous challenges to public health, becoming a major medical burden. This study aimed to explore the patterns, temporal trends, and all-cause mortality of multimorbidity of NCDs in the United States from 1999 to 2018, by gender-specific and age-specific. The data reported by this study could serve as a reference for additional NCD research.

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COVID-19: Special Article
Changes in mental health of Korean adolescents before and during the COVID-19 pandemic: a special report using the Korea Youth Risk Behavior Survey
Bomi Park, Jihee Kim, Jieun Yang, Sunhye Choi, Kyungwon Oh
Epidemiol Health. 2023;45:e2023019.   Published online February 14, 2023
DOI: https://doi.org/10.4178/epih.e2023019
  • 27,902 View
  • 409 Download
  • 9 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We aimed to study the effects of the coronavirus disease 2019 (COVID-19) pandemic on adolescents’ mental health in Korea.
METHODS
We used data from the Korea Youth Risk Behavior Survey 2018-2021 with 227,139 students aged 12-18 years. We estimated the differences in depressive symptoms, suicidal ideation, and stress perception before (2018-2019) and during (2020-2021) the pandemic, as well as before (2019), the first year (2020) of, and the second year (2021) of the pandemic. We also examined whether COVID-19 is statistically associated with mental health.
RESULTS
In both male and female adolescents, the prevalence of depressive symptoms, suicidal ideation, and stress perception was higher in the “not living with family,” “low household economic status,” and “self-rated unhealthy status” subgroups. The prevalence of depressive symptoms and stress perception was higher in middle school students. Adolescents were less likely to experience depressive symptoms (adjusted odds ratio [aOR], 0.86; 95% confidence interval [CI], 0.83 to 0.89), suicidal ideation (aOR, 0.80; 95% CI, 0.76 to 0.83), and stress perception (aOR, 0.76; 95% CI, 0.74 to 0.79) in 2020 than in 2019. However, there were more depressive symptoms (aOR, 1.06; 95% CI, 1.02 to 1.09), suicidal ideation (aOR, 1.15; 95% CI, 1.10 to 1.21), and stress perception (aOR, 1.19; 95% CI, 1.16 to 1.23) in 2021 than in 2020.
CONCLUSIONS
The COVID-19 pandemic had positive impacts on mental health of adolescents in its early stages but has had negative impacts as the pandemic continues. Attention should be paid to adolescents who are particularly vulnerable to the mental health effects of the pandemic.
Summary
Korean summary
The results from a nationally representative data showed that mental health in adolescents was improved in the first year of the COVID-19 pandemic compared to before the COVID-19 pandemic, but it was deteriorated in the second year of the pandemic compared to the first year.
Key Message
본 연구에서는 대규모 건강조사를 이용하여 코로나19가 장기화됨에 따른 영향을 평가하고자 하였다. 2018년-2021년 청소년건강행태조사에 참여한 만 12-18세 청소년 227,139 명을 대상으로 분석한 결과, 코로나19 유행 첫번째 해(2020년)에는 코로나19 유행 이전에 비해 정신건강이 개선되었으나, 코로나19 유행 두 번째 해(2021년)에는 코로나19 유행 첫 번째 해에 비해 청소년 정신건강이 나빠졌다. 또한 가족과 함께 거주하지 않는 경우, 가정 경제 수준이 낮은 경우, 본인이 건강하지 않다고 인지하는 경우에 더 취약하였다.

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COVID-19: Special Article
Changes in health behaviors and obesity of Korean adolescents before and during the COVID-19 pandemic: a special report using the Korea Youth Risk Behavior Survey
Chang-Mo Oh, Yangha Kim, Jieun Yang, Sunhye Choi, Kyungwon Oh
Epidemiol Health. 2023;45:e2023018.   Published online February 14, 2023
DOI: https://doi.org/10.4178/epih.e2023018
  • 32,062 View
  • 398 Download
  • 12 Web of Science
  • 14 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study aimed to investigate changes in health behaviors, including cigarette smoking, alcohol drinking, physical activity, dietary behaviors, and obesity, before and during the coronavirus disease 2019 (COVID-19) pandemic using the Korea Youth Risk Behavior Survey (KYRBS) database.
METHODS
KYRBS data from 2015 to 2021 were used in this study. Differences in health behaviors between before (pre-pandemic period: 2018-2019) and during (pandemic period: 2020-2021) the pandemic were examined. Differences were compared using linear regression and the chi-square test considering the complex survey design after adjusting for grade level.
RESULTS
The prevalence of current cigarette smoking and current alcohol drinking significantly decreased in both male and female students during the pandemic compared to the pre-pandemic period. However, the prevalence of obesity significantly increased in both male and female students during the same period. When examining physical activity and dietary behaviors closely related to obesity, fast food consumption increased and fruit consumption decreased during the pandemic in both male and female students, whereas no significant changes in physical activity were observed in either male or female students.
CONCLUSIONS
The deterioration of adolescent dietary behaviors and an increase in the prevalence of obesity can increase the future disease burden, and concerted efforts at the individual and national levels are needed to reduce obesity and promote healthy dietary behaviors.
Summary
Korean summary
이 연구는 한국 청소년건강행태조사자료(KYRBS)를 사용하여 코로나19 유행 전후의 우리나라 청소년들의 흡연, 음주, 신체활동, 식습관, 비만 등의 건강행태의 변화에 대하여 살펴보고자 하였다. 이 연구에서는 2015년부터 2021년까지의 청소년건강행태조사자료를 사용하여, 코로나19 유행 이전 (2018-2019년)과 코로나 유행 이후 (2020-2021년) 기간의 건강행태의 변화에 대하여 조사하였다. 학년레벨을 보정한 후, 복합표본설계를 고려하여 로지스틱 회귀분석과 카이제곱검정을 이용하여 코로나19 유행 이전 (2018-2019년)과 비교하여, 코로나 유행 이후 (2020-2021년) 기간의 건강행태의 변화가 있었는지에 대하여 확인하였다. 그 결과, 코로나19 유행 이전 (2018-2019년)과 비교하여, 코로나19 유행 기간(2020-2021년) 동안에 현재흡연율과 현재음주율이 유의하게 감소하였다. 그러나 동일한 기간 동안에 남학생과 여학생 모두에서 비만율이 유의하게 증가하였는데, 비만율과 관련된 신체활동 및 식습관에 대하여 살펴보았을 때, 신체활동에서는 유의한 변화가 없었던 반면, 남학생과 여학생 모두에서 패스트푸드 섭취는 증가하고 과일섭취가 감소한 것으로 나타났다. 따라서 코로나19 유행기간 동안 흡연율 및 음주율 등의 청소년 건강에 유익한 변화도 있었으나, 비만율도 같이 증가한 것을 확인할 수 있었다. 청소년기의 식습관의 악화 및 비만율의 증가는 미래 우리나라의 질병부담을 증가시킬 수 있기 때문에, 청소년의 비만율을 낮추고 건강한 식습관을 증진시키기 위한 개인 및 사회 차원의 노력이 필요하다.
Key Message
-The current cigarette smoking and current alcohol drinking rates significantly decreased among Korean adolescents during the pandemic period compared to the pre-pandemic period. -On the other hand, the obesity rate increased significantly especially among Korean male adolescents, which is accompanied by changes in dietary habits such as an increase in fast food intake and a decrease in fruit intake.

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COVID-19: Health Statistics
Changes in food and nutrient intakes in Korean adults before and during the COVID-19 pandemic: data from the 2011-2020 Korea National Health and Nutrition Examination Survey
Kyungwon Oh, Suyeon Park, Sihyun Park, Sungha Yun, Hongseok Choi, Eun Kyeong Jeong
Epidemiol Health. 2023;45:e2023015.   Published online February 1, 2023
DOI: https://doi.org/10.4178/epih.e2023015
  • 28,676 View
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  • 8 Web of Science
  • 12 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study was to examine the changes in dietary habits and food and nutrient intakes between before (2019) and during (2020) the coronavirus disease 2019 (COVID-19) pandemic from the Korea National Health and Nutrition Examination Survey (KNHANES).
METHODS
A total of 54,995 participants aged ≥19 years who participated in the 2011-2020 KNHANES were included. The 10-year trend (2011-2020) and differences between 2019 and 2020 for dietary habits and food and nutrient intakes were estimated using SAS.
RESULTS
In the past 10 years (2011-2020), the dietary habits (increase in skipping meals and eating out), food intake (increase in meats and decrease in fruits and vegetables), and nutrient intake (increase in fat and decrease in sodium) in adults have changed. When comparing between 2019 and 2020, there were 4.6%p decrease in the eating out more than once a day. On the other hand, there were no significant differences in the intakes of food, energy and most of nutrients between 2019 and 2020, except for the proportion of energy intake from fat (1.0%p increase) and carbohydrate (1.0%p decrease).
CONCLUSIONS
Although a change in dietary habits from before to during the COVID-19 pandemic was observed, food and nutrient intakes have not deteriorated markedly and appear similar to the trends in the past 10 years. Throughout the COVID-19 pandemic, it is necessary to monitor the effects of changes in dietary habits on health as well as food and nutrient intakes.
Summary
Korean summary
코로나19 유행 전, 후 비교 시, 외식 감소, 가정식 섭취 증가 등 식생활은 변화가 있었으나 주요 식품 및 영양소 섭취는 큰 변화없이 최근 10년간의 추이가 지속되고 있었다.
Key Message
Although a change in dietary habits from before to during the COVID-19 pandemic was observed, food and nutrient intakes have not deteriorated markedly and appear similar to the trends in the past 10 years in Korean adults.

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Original Articles
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
  • 23,680 View
  • 187 Download
  • 14 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary 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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    Takahiro Aoyama, Yutaro Koide, Hidetoshi Shimizu, Atsushi Urikura, Tomoki Kitagawa, Shingo Hashimoto, Hiroyuki Tachibana, Takeshi Kodaira
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    Mengxia Fu, Zhiming Peng, Min Wu, Dapeng Lv, Yanping Li, Shuzhen Lyu
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  • Determining risk‐adapted starting age and interval for breast cancer screening based on reproductive and hormonal factors
    Tung Hoang, Jeonghee Lee, So‐Youn Jung, Jeongseon Kim
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  • Impact of fragmented care on cancer outcomes among korean women with breast and cervical cancer: a focus on regional and economic disparities
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Smokeless tobacco consumption and its association with tobacco control factors in the Western Pacific Region: results from the Global Youth Tobacco Survey 2015-2019
Chandrashekhar T. Sreeramareddy, Anusha Manoharan
Epidemiol Health. 2022;44:e2022103.   Published online November 8, 2022
DOI: https://doi.org/10.4178/epih.e2022103
  • 21,548 View
  • 123 Download
  • 2 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We estimated the prevalence of smokeless tobacco (ST) consumption and its associations with tobacco control factors among school-going youth in 18 Western Pacific Region (WPR) countries.
METHODS
We analyzed school-based Global Youth Tobacco Survey (2014-2019) microdata from 18 WPR countries and estimated weighted prevalence rates of ST consumption, cigarette smoking, and dual use. We used multilevel binary logistic regression to examine the associations of ST consumption and dual use with demographic variables, exposure to pro-tobacco and anti-tobacco factors, national income, and MPOWER indicators.
RESULTS
Data from 58,263 school-going youth were analyzed. The prevalence of past 30-day ST consumption was highest in Kiribati (42.1%), the Marshall Islands (26.1%), Micronesia (21.3%), Palau (16.0%), and Papua New Guinea (15.2%). In adjusted multilevel models, ST consumption and dual use were significantly associated with sex, age, parental smoking, pro-tobacco factors, national income, and MPOWER score. For each unit increase in score for cessation programs, we observed approximately 1.4-fold increases in the odds of youth ST consumption (adjusted odds ratio [aOR], 1.38; 95% confidence interval [CI], 1.15 to 1.66) and dual use (aOR, 1.47; 95% CI, 1.16 to 1.86). Similarly, for each unit increase in score for health-related warnings, the odds of both ST consumption (aOR, 0.47; 95% CI, 0.42 to 0.53) and dual use (aOR, 0.35; 95% CI, 0.30 to 0.42) decreased by approximately 60%.
CONCLUSIONS
The prevalence of youth ST consumption was substantial in the Pacific Islands, exceeding that of cigarette smoking in some countries. Implementing MPOWER measures for ST products could help reduce ST consumption.
Summary
Key Message
The prevalence of smokeless tobacco consumption, and cigarette smoking is considerably high among the school going youth in five pacific island nations of Western Pacific Region. Exposure to pro-tobacco factors and parental smoking were positively associated with youth smokeless tobacco consumption as well as dual use (both smokeless tobacco and cigarettes smoking) Closer monitoring and strict tobacco control policies are needed to prevent further escalation of smokeless tobacco consumption.

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  • Single, Dual, and Poly Use of Tobacco Products, and Associated Factors Among Adults in 18 Global Adult Tobacco Survey Countries During 2015–2021
    Chandrashekhar T. Sreeramareddy, Kiran Acharya, N. RamakrishnaReddy
    International Journal of Mental Health and Addiction.2025; 23(5): 4118.     CrossRef
  • Impact of Smokeless Oral Nicotine Products on Cardiovascular Disease: Implications for Policy, Prevention, and Treatment: A Policy Statement From the American Heart Association
    Cheryl R. Dennison Himmelfarb, Neal L. Benowitz, Melissa D. Blank, Aruni Bhatnagar, Paul J. Chase, Esa M. Davis, Jessica L. Fetterman, Brittney Keller-Hamilton, Oluwabunmi Ogungbe, Robert L. Page, Mary Rezk-Hanna, Rose Marie Robertson, Laurie P. Whitsel
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    Bobby Porykali, Ryley Gronau, Phyllis Tran, Juliana Chen, Margaret Allman-Farinelli, Anna Rangan, Shelina Porykali, Robin Oge, Hans Nogua, Alyse Davies
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Item non-response imputation in the Korea National Health and Nutrition Examination Survey
Serhim Son, Hyemi Moon, Hyonggin An
Epidemiol Health. 2022;44:e2022096.   Published online October 28, 2022
DOI: https://doi.org/10.4178/epih.e2022096
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
The Korea National Health and Nutrition Examination Survey (KNHANES) is a public health survey that assesses individuals’ health and nutritional status and monitors the prevalence of major chronic diseases. In general, sampling weights are adjusted for unit non-responses and imputation is conducted for item non-responses. In this study, we proposed strategies for imputing item non-responses in the KNHANES in order to improve the usefulness of data, minimize bias, and increase statistical power.
METHODS
After applying logical imputation, we adopted 2 separate imputation methods for each variable type: unweighted sequential hot-deck imputation for categorical variables and sequential regression imputation for continuous variables. For variance estimation, multiple imputations were applied to the continuous variables. To evaluate the performance of the proposed strategies, we compared the marginal distributions of imputed variables and the results of multivariable regression analysis for the complete-case data and the expanded data with imputed values, respectively.
RESULTS
When comparing the marginal distributions, most non-responses were imputed. The multivariable regression coefficients presented similar estimates; however, the standard errors decreased, resulting in statistically significant p-values. The proposed imputation strategies may cope with the loss of precision due to missing data, thus enhancing statistical power in analyses of the KNHANES by providing expanded data with imputed values.
CONCLUSIONS
The proposed imputation strategy may enhance the utility of data by increasing the number of complete cases and reducing the bias in the analysis, thus laying a foundation to cope with the occurrence of item non-responses in further surveys.
Summary
Korean summary
본 연구는 국민건강영양조사에서 발생한 항목무응답의 대체방법에 대해 연구한다. 본 논문에서 제시된 논리적 대체와 무응답 대체법을 이용해 대체된 데이터를 제공함으로써 결과의 편향 감소와 통계적 검정력 향상을 기대할 수 있다. 또한, 본 연구의 결과는 추후 데이터 수집시 발생하는 무응답 발생의 최소화를 위한 대책마련에 사용될 수 있다.
Key Message
The proposed logical imputation and item non-response imputation strategy may enhance the utility of data by increasing the number of complete cases and reducing the bias in the analysis, thus laying a foundation to cope with the occurrence of item non-responses in further surveys.

Citations

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  • Associations of mediterranean diet score and age-related macular degeneration in Korean elderly
    Won Jang, Jungeun Choi, Hyesook Kim
    BMC Public Health.2024;[Epub]     CrossRef
COVID-19: Special Article
Mental health of Korean adults before and during the COVID-19 pandemic: a special report of the 2020 Korea National Health and Nutrition Examination Survey
Hyunsuk Jeong, Suyeon Park, Jihee Kim, Kyungwon Oh, Hyeon Woo Yim
Epidemiol Health. 2022;44:e2022042.   Published online April 25, 2022
DOI: https://doi.org/10.4178/epih.e2022042
  • 39,328 View
  • 600 Download
  • 24 Web of Science
  • 25 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Coronavirus disease 2019 (COVID-19) and the associated social distancing, limited freedom, and fear of an uncertain future are expected to have substantial mental health effects. We investigated mental health responses in the community during the first year of the COVID-19 pandemic in Korea.
METHODS
We used 2016-2019 and 2020 data from the Korea National Health and Nutrition Examination Survey (KNHANES) to assess pre-pandemic and pandemic mental health status, respectively, in terms of perceived severe stress, depression, and suicidal plans. All analyses were gender-stratified. Pre-specified subgroup analyses were performed according to age, employment status, and household income.
RESULTS
The percentage of Korean adults with suicidal plans increased significantly from 1.3%p (95% confidence interval [CI], 1.1 to 1.5) in 2016-2019 to 1.8%p (95% CI, 1.4 to 2.1) in 2020. Individuals in their 20s and 40s showed a marked increase in suicidal plans (1.2%p; 95% CI, 0.0 to 2.3 and 0.9%p; 95% CI, 0.0 to 1.8, respectively). In men, depression and perceived severe stress increased significantly from pre-COVID-19 to 2020. There was a 2.4%p (95% CI, 0.8 to 4.0) increase in depression among standard workers and a 2.9%p increase in depression in individuals in the second-highest quintile of household income from 2016 and 2018 to 2020.
CONCLUSIONS
As COVID-19 continued, mental health issues such as suicidal plans, depression, and severe stress increased significantly in young men and people in the second-highest quintile of household income. Proactive community mental health efforts are needed to prevent increases in the suicide rate resulting from prolonged exposure to the COVID-19 pandemic.
Summary
Korean summary
코로나19 이전에 비해 코로나19 유행 첫 해 동안에 전체 인구에서 자살 계획 유병율이 유의하게 증가하였고 특히 20대-40대에서 증가 비율이 높았다. PHQ-9으로 측정한 우울증 유병율은 전체 남성에서 증가하였고 특히 30대 남성에서 증가 비율이 높았다. 코로나19 영향으로 자살 계획과 우울증과 같은 정신 건강 문제가 젊은 성인에서 크게 증가하였기 때문에 이러한 정신건강 문제가 자살률 증가로 이어지는 것을 방지하기 위해 국가적 차원의 체계적인 정책과 적극적인 지역사회 정신건강 중재가 필요하다.
Key Message
There was a significant increase in the prevalence of suicidal plan in the overall population during the first year of COVID-19 pandemic compared to pre-COVID-19. In particular, suicide plans increased among those in their 20s and 40s. The prevalence of PHQ-9 detected depression increased in all men, especially among men in their 30s. As mental health problems such as suicide planning and depression have significantly increased among young adults due to the impact of COVID-19, systematic policies at the national level and active community mental health interventions are needed to prevent these mental health problems from leading to an increase in suicide rates.

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COVID-19: Special Article
Obesity, hypertension, diabetes mellitus, and hypercholesterolemia in Korean adults before and during the COVID-19 pandemic: a special report of the 2020 Korea National Health and Nutrition Examination Survey
Ga Bin Lee, Yoonjung Kim, Suyeon Park, Hyeon Chang Kim, Kyungwon Oh
Epidemiol Health. 2022;44:e2022041.   Published online April 25, 2022
DOI: https://doi.org/10.4178/epih.e2022041
  • 37,464 View
  • 716 Download
  • 22 Web of Science
  • 32 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We investigated trends in obesity, hypertension, diabetes, and hypercholesterolemia before and during the coronavirus disease 2019 (COVID-19) pandemic in the Korean adult population.
METHODS
Data from 60,098 participants in the Korea National Health and Nutritional Examination Survey between 2011 and 2020 aged ≥19 were used. The age-standardized prevalence and annual percent changes (APCs) were calculated for obesity (body mass index ≥25 kg/m2), hypertension (systolic/diastolic blood pressure ≥140/90 mmHg or under treatment), diabetes (hemoglobin A1c ≥6.5%, fasting glucose ≥126 mg/dL, physician diagnosis, or under treatment), and hypercholesterolemia (total cholesterol ≥240 mg/dL or under treatment).
RESULTS
Over the past decade (2011-2020), the age-standardized APCs (95% confidence intervals) for obesity, hypertension, diabetes and hypercholesterolemia were 3.0% (2.1 to 3.8), 0.1% (-1.3 to 1.5), 1.5% (-1.0 to 4.0) and 8.0% (5.7 to 10.3), respectively, in men; and -0.2% (-1.5 to 1.2), -0.5% (-1.9 to 0.9), -0.1% (-2.3 to 2.2) and 5.9% (3.9 to 8.0), respectively, in women. In 2020 compared to the previous 3 years (2017-2019), obesity, hypertension, diabetes, and hypercholesterolemia increased in men (6.0, 1.8, 1.9, and 2.8%p, respectively), but an increase was not apparent in women (2.5, -1.1, 0.8, and 0.7%p, respectively).
CONCLUSIONS
An increase in major chronic diseases was observed in Korean adults, especially men, during the COVID-19 pandemic. In order to reduce the burden of cardiovascular and metabolic diseases in the future, effective intervention strategies need to be developed according to the characteristics of the target groups.
Summary
Korean summary
한국인의 비만, 고혈압, 당뇨 및 고지혈증 유병률은 지난 10년간 전반적으로 증가하는 경향을 보였다. 특히, 코로나 19가 유행한 2020년에 남성의 주요 만성질환 유병률은 지난 3년 평균치와 비교하였을 때 모두 유의하게 증가하였다. 반면, 여성에서 만성질환 유병률의 뚜렷한 증가는 관찰되지 않았다.
Key Message
During COVID-19 pandemic, the overall increase in major chronic diseases was observed in Korean adults, and this trend was prominent in men. Accordingly, target-specific intervention strategies need to be developed to reduce the burden of cardiovascular and metabolic diseases in the future.

Citations

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Original Article
Differences in accuracy of height, weight, and body mass index between self-reported and measured using the 2018 Korea Community Health Survey data
Yoonsil Ko, Sunhye Choi, Jisoo Won, Yeon-Kyeng Lee, Dong-Hyun Kim, Seon Kui Lee
Epidemiol Health. 2022;44:e2022024.   Published online February 19, 2022
DOI: https://doi.org/10.4178/epih.e2022024
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study aimed to determine an effective survey method for the accurate calculation of obesity prevalence by comparing the self-reported and measured height, weight, and body mass index (BMI) using the 2018 Korea Community Healthy Survey (CHS) data.
METHODS
Raw data from the 2018 CHS were used to analyze the differences, correlation, and agreement between self-reported and measured height, weight, and BMI.
RESULTS
The self-reported height was over-reported than the measured height (0.59 cm greater for men and 0.71 cm greater for women), while the self-reported weight was under-reported than the measured weight (0.55 kg less for men and 0.67 kg less for women). Subsequently, the self-reported BMI was under-estimated (0.35 kg/m<sup>2</sup> lower for men and 0.49 kg/m<sup>2</sup> lower for women) compared with the measured BMI. The kappa statistic and agreement between measured and self-reported values per BMI category (underweight, normal, overweight, and obesity) were 0.82 and 79.6%, respectively.
CONCLUSIONS
The prevalence of obesity should be calculated using the measured values provided in the CHS in order to promote local health projects based on accurate evidence.
Summary
Korean summary
본 연구는 2018년 지역사회건강조사 원시자료를 이용하여, 자가보고된 신장, 체중, 그리고 체질량지수 값과 실제 측정한 값 간에 차이를 분석하고 상관성과 일치도를 확인하고자 하였으며, 확인결과 자가보고값 체질량지수는 측정값보다 과소측정(남자의 경우 측정값보다 자가보고값이 0.35kg/m2 낮게, 여자는 0.49kg/m2 낮게 측정)된것을 확인하였다.
Key Message
This study aimed to determine an effective survey method for the accurate calculation of obesity prevalence by comparing the self-reported and measured height, weight, and body mass index (BMI) using the 2018 Community Healthy Survey (CHS) data.

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Data Profile
The Korea National Health and Nutrition Examination Survey data linked Cause of Death data
Sungha Yun, Kyungwon Oh
Epidemiol Health. 2022;44:e2022021.   Published online February 9, 2022
DOI: https://doi.org/10.4178/epih.e2022021
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
The Korea National Health and Nutrition Examination Survey (KNHANES) is a national health survey that is conducted annually to assess the health and and health-related behaviors of Korean population. To utilize KNHANES data to studies of mortality risk factors, the Korea Disease Control and Prevention Agency (KDCA) constructed a database linking KNHANES data to cause-of-death statistics in Statistics Korea, made available to researchers since 2020. The KNHANES data were linked to the Cause of Death Statistics based on resident registration numbers for subjects aged 19 years or older who agreed to link the data. The linkage rate between 2007-2015 National Health and Nutrition Examination Survey and 2007-2019 Cause of Death Statistics was 97.1%. In the linked dataset, the total death rate was 6.6%, of which neoplasms accounted for the highest death rate (32.1%), followed by circulatory system disease (22.7%) and respiratory system disease (11.5%). The linked dataset was made available through the Research Data Center of the KDCA after a review of the research proposal, and will be made available after periodical updates.
Summary
Korean summary
1. 국민건강영양조사 자료가 사망 위험요인 규명 연구에 활용되도록 통계청의 사망원인통계와 연계자료 구축함 2. 2007~2015년 국민건강영양조사와 2007~2019년 사망원인통계의 연계율은 97.1%이었음 3. 국민건강영양조사-사망원인통계 연계자료는 2020년부터 연구자에게 질병관리청 내 학술연구자료처리실를 통해 제공되고 있음
Key Message
1. To utilize the Korea National Health and Nutrition Examination Survey (KNHANES) data to studies of mortality risk factors, the data were linked to the Cause of Death Statistics in the Statistics Korea. 2. The linkage rate between the 2007-2015 KNHANES and the 2007-2019 Cause of Death Statistics was 97.1%. 3. The Korea National Health and Nutrition Examination Survey data linked Cause of Death data have been provided to researchers through the Research Data Center in the Korea Disease Control and Prevention Agency (KDCA) since 2020.

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Original Articles
The predictive value of resting heart rate in identifying undiagnosed diabetes in Korean adults: Korea National Health and Nutrition Examination Survey
Dong-Hyuk Park, Wonhee Cho, Yong-Ho Lee, Sun Ha Jee, Justin Y. Jeon
Epidemiol Health. 2022;44:e2022009.   Published online January 3, 2022
DOI: https://doi.org/10.4178/epih.e2022009
  • 27,790 View
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  • 3 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
The purpose of this study was (1) to examine whether the addition of resting heart rate (RHR) to the existing undiagnosed diabetes mellitus (UnDM) prediction model would improve predictability, and (2) to develop and validate UnDM prediction models by using only easily assessable variables such as gender, RHR, age, and waist circumference (WC).
METHODS
Korea National Health and Nutrition Examination Survey (KNHANES) 2010, 2012, 2014, 2016 data were used to develop the model (model building set, n=19,675), while the data from 2011, 2013, 2015, 2017 were used to validate the model (validation set, n=19,917). UnDM was defined as a fasting glucose level ≥126 mg/dL or glycated hemoglobin ≥6.5%; however, doctors have not diagnosed it. Statistical package for the social sciences logistic regression analysis was used to determine the predictors of UnDM.
RESULTS
RHR, age, and WC were associated with UnDM. When RHR was added to the existing model, sensitivity was reduced (86 vs. 73%), specificity was increased (49 vs. 65%), and a higher Youden index (35 vs. 38) was expressed. When only gender, RHR, age, and WC were used in the model, a sensitivity, specificity, and Youden index of 70%, 67%, and 37, respectively, were observed.
CONCLUSIONS
Adding RHR to the existing UnDM prediction model improved specificity and the Youden index. Furthermore, when the prediction model only used gender, RHR, age, and WC, the outcomes were not inferior to those of the existing prediction model.
Summary
Korean summary
당뇨병 미인지 또는 미진단은 적절한 치료 시작 시기를 늦추고 당뇨병 합병증 발생의 위험을 높이기 때문에, 각국은 당뇨병 예측 모형을 개발하여 당뇨병을 조기에 예측하고, 치료 시기를 앞당기기 위해 노력하고 있다. 본 연구는 기존의 한국인 당뇨병 예측 모형에 안정시심박수를 추가 변수로 포함시켜, 예측 모형의 성능이 일부개선되는 것을 확인하였고, 더 나아가 나이, 허리 둘레, 그리고 안정시심박수를 포함하여 예측 모형을 개발하고, 그 성능을 확인하였다. 본 연구에서는 간단하게 측정이 가능한 허리 둘레와 안정시심박수 그리고 나이만 포함한 예측 모형이 기존의 예측 모형과 비교해 성능이 열등하지 않은 것을 확인하였다.
Key Message
Higher RHR is associated with increased risk of diabetes. When RHR is added to the Korean undiagnosed diabetes risk score model (Age, Family history of diabetes, Hypertension, Waist circumference, Smoking, Alcohol consumption), the model somewhat increased its predictability of undiagnosed diabetes. Furthermore, the prediction model developed only using age, waist circumference and RHR, which anyone can easily measure or access, had similar predictability to the previous undiagnosed diabetes risk prediction model. The results of this study may help develop future strategies or applications for predicting early undiagnosed diabetes.

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Trends in the prevalence and management of major metabolic risk factors for chronic disease over 20 years: findings from the 1998-2018 Korea National Health and Nutrition Examination Survey
Yoonjung Kim, Sun Jin Nho, Gyeongji Woo, Hyejin Kim, Suyeon Park, Youngtaek Kim, Ok Park, Kyungwon Oh
Epidemiol Health. 2021;43:e2021028.   Published online April 19, 2021
DOI: https://doi.org/10.4178/epih.e2021028
  • 33,771 View
  • 430 Download
  • 28 Web of Science
  • 28 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We aimed to explore trends in the prevalence and management of obesity, hypertension, diabetes, and hypercholesterolemia in Korean adults from 1998 to 2018 using data from the Korea National Health and Nutrition Examination Survey (KNHANES).
METHODS
The study participants included 79,753 individuals aged ≥ 30 years who had participated in the health examination and health interview of the first (1998) to the seventh (2016-2018) KNHANES. The prevalence and management as well as annual percent change (APC) in chronic diseases were analyzed using SAS and the Joinpoint software program.
RESULTS
The prevalence of obesity in men significantly increased from 26.8% in 1998 to 44.7% in 2018 (APC= 1.9, p< 0.001), whereas that in women decreased slightly from 30.5% in 1998 to 28.3% in 2018 (APC= -0.5, p< 0.001). The prevalence of hypertension in men was 33.2% in 2018, with no significant change, whereas that in women slightly decreased to 23.1% in 2018 (APC= -0.9, p< 0.001). The prevalence of diabetes in men increased slightly from 10.5% in 2005 to 12.9% in 2018 (APC= 1.6, p< 0.001), whereas that in women remained at approximately 8%, with no significant change. The prevalence of hypercholesterolemia in both men and women increased 3-fold in 2018 (20.9% in men [APC = 8.2, p < 0.001] and 21.4% in women [APC= 7.1, p< 0.001]) compared to that in 2005. The awareness rate, treatment rate, and control rate of hypertension and hypercholesterolemia increased 2-3 fold. Regarding diabetes, the treatment rate increased, but the control rate did not change.
CONCLUSIONS
Over the past 20 years, the prevalence of obesity (in men), diabetes, and hypercholesterolemia has increased and management indicators, such as the awareness rate, treatment rate, and control rate of chronic diseases, have improved continuously.
Summary
Korean summary
국민건강영양조사(1998-2018) 자료를 활용하여 우리나라 성인의 비만, 고혈압, 당뇨병, 고콜레스테롤혈증 유병률 및 관리수준을 분석한 결과, 20년 동안 비만(남자), 당뇨병, 고콜레스테롤혈증 만성질환의 유병 수준은 악화되고 있는 반면, 만성질환의 인지율, 치료율, 치료자 중 조절률 등 관리지표는 지속적으로 개선되고 있었다.
Key Message
We examined trends in the prevalence and management of obesity, hypertension, diabetes, and hypercholesterolemia in Korean adults from the 1998-2018 Korea National Health and Nutrition Examination Survey. Over the past 20 years, the prevalence of obesity (in men), diabetes, and hypercholesterolemia has increased and management indicators, such as the awareness rate, treatment rate, and control rate of chronic diseases, have improved continuously.

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Trends in food and nutrient intake over 20 years: findings from the 1998-2018 Korea National Health and Nutrition Examination Survey
Sanghui Kweon, Jin Young Park, Myungsook Park, Yangha Kim, So Yeong Yeon, Leena Yoon, Sungha Yun, Suyeon Park, Ji Eun Yang, Youngtaek Kim, Ok Park, Kyungwon Oh
Epidemiol Health. 2021;43:e2021027.   Published online April 19, 2021
DOI: https://doi.org/10.4178/epih.e2021027
  • 32,711 View
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  • 33 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We aimed to examine the current status and trends of food and nutrient intake in the Korean population over the past 20 years using the data from the Korea National Health and Nutrition Examination Survey (KNHANES).
METHODS
We conducted a survey of 116,284 subjects over the age of one year in Korea, who participated in the KNHANES between 1998 and 2018. We collected data on the subjects’ intake for the day before using the 24-hour recall method. The annual percent change (APC) in the food groups and nutrient intake were calculated using SAS and Joinpoint software.
RESULTS
The intake of grains (APC=-0.4, p<0.05) and vegetables (APC=-0.8, p<0.05) was observed to decrease. In contrast, the intake of beverages, meat, dairy, and eggs increased. In particular, beverage intake increased by more than four times (APC=9.2, p<0.05). There was no significant change in energy intake. However, the proportion of energy intake from carbohydrates decreased by approximately 5%p (APC=-0.3, p<0.05), whereas that from fat increased by approximately 5%p (APC= 1.1, p<0.05). Additionally, there were decreases in the proportion of energy intake from breakfast and homemade meals and increases in the energy intake from snacks, dining out, and convenience food. The intake of vitamin C (APC=-3.2, p<0.05) and sodium (APC=-2.3, p<0.05) significantly decreased.
CONCLUSIONS
Over the past 20 years, there has been decreases in the intake of grains, vegetables, carbohydrates, sodium, and vitamin C and increases in the intake of beverages, dairy, meat, eggs, and fat. Since nutritional status is an important factor in the prevention and management of chronic diseases, it should be continuously monitored.
Summary
Korean summary
국민건강영양조사(1998-2018) 자료를 활용하여 우리 국민의 지난 20년간의 식품 및 영양소 섭취 현황 및 추이를 분석한 결과, 곡류, 채소류, 탄수화물, 나트륨, 비타민 C 섭취 감소, 음료류, 우유류, 육류, 난류, 지방 섭취 증가 등 식품 및 영양소 섭취에 변화가 있었다.
Key Message
We examined the current status and trends of food and nutrient intake in the Korean population using the data from the 1998-2018 Korea National Health and Nutrition Examination Survey. Over the past 20 years, there have been decreases in the intake of grains, vegetables, carbohydrates, sodium, and vitamin C and increases in the intake of beverages, dairy, meat, eggs, and fat.

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Trends in health behaviors over 20 years: findings from the 1998-2018 Korea National Health and Nutrition Examination Survey
Soyeon Kim, Sunhye Choi, Jihee Kim, Suyeon Park, Young-Taek Kim, Ok Park, Kyungwon Oh
Epidemiol Health. 2021;43:e2021026.   Published online April 19, 2021
DOI: https://doi.org/10.4178/epih.e2021026
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study aimed to examine the trends in health behaviors in Korean population using data from the Korea National Health and Nutrition Examination Survey (KNHANES).
METHODS
The subjects were 96,408 adults aged 19 years or older who participated in the first (1998) through seventh (2016-2018) KNHANES health interview. The prevalence of health behaviors (cigarette smoking, alcohol drinking, and physical activity) and annual percent change (APC) were estimated using SAS and the Joinpoint program.
RESULTS
The prevalence of current cigarette smoking in men decreased by 2.8%p (APC= -2.8, p< 0.001) annually over the 20-year period, and the prevalence of exposure to secondhand smoke at home substantially decreased compared to 2005 (APC= -8.8, p< 0.001). Compared to 2005, the prevalence of current alcohol drinking in women, but not men, increased (APC= 2.0, p< 0.001), and the prevalence of binge drinking decreased in men (APC= -0.7, p< 0.001) and increased in women (APC= 2.4, p< 0.001). The prevalence of aerobic physical activity decreased from 2014 in both gendersd (p< 0.001). The prevalence of healthy behaviors practice (non-smoking, alcohol abstinence, and aerobic physical activity) was down-trending (APC= -5.3, p< 0.001), especially among women (APC= -6.4, p< 0.001).
CONCLUSIONS
Over the past 20 years, smoking behaviors improved. However, drinking behavior was unchanged and physical activity indicators markedly decreased. More active programs are necessary for improving health behaviors, which are major risk factors linked to chronic diseases.
Summary
Korean summary
국민건강영양조사(1998-2018) 자료를 활용하여 지난 20년간 성인의 건강행태를 분석한 결과 흡연율과 간접흡연 노출률은 지속적으로 감소하였고, 신체활동 실천율 또한 감소하였다. 월간음주율과 폭음률의 경우 남자는 큰 변화가 없었던 반면 여자는 모두 증가하였다.
Key Message
This study aimed to examine the trends in health behaviors in Korean population using data from the 1998-2018 Korea National Health and Nutrition Examination Survey (KNHANES). Over the past 20 years, the prevalence of cigarette smoking and exposure to secondhand smoke in Korean adults consistently decreased, as well as the prevalence of physical activity. There was no considerable change in men, whereas in women, the prevalence of alcohol drinking and binge drinking both increased.

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Methods
Korea National Health and Nutrition Examination Survey, 20th anniversary: accomplishments and future directions
Kyungwon Oh, Yoonjung Kim, Sanghui Kweon, Soyeon Kim, Sungha Yun, Suyeon Park, Yeon-Kyeng Lee, Youngtaek Kim, Ok Park, Eun Kyeong Jeong
Epidemiol Health. 2021;43:e2021025.   Published online April 19, 2021
DOI: https://doi.org/10.4178/epih.e2021025
  • 62,200 View
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
The Korea National Health and Nutrition Examination Survey (KNHANES) was initiated in 1998 to provide evidence for the development and evaluation of health policies and programs. The Korea Disease Control and Prevention Agency is responsible for the KNHANES and has conducted it as a series of surveys. Over the past 20 years, efforts to produce accurate, timely, and nationwide health statistics have been refined by establishing a continuous annual survey system with full-time field staff, incrementally expanding survey components, collaborating with relevant academic societies for quality control, and revising the survey methods. Additionally, the utility of the collected data was increased by linking the KNHANES data with related data from other government agencies or institutions and making the overall data publicly available on the official website of KNHANES (https://knhanes.kdca.go.kr). Additional long-term plans are being developed, including plans to continue producing nationwide health indicators and invigorating the utilization of the KNHANES data.
Summary
Korean summary
국민건강영양조사는 국민건강증진법제16조에 근거하여 1998년부터 우리 국민의 건강수준, 건강행태, 식품 및 영양소 섭취 실태에 대한 국가단위 통계를 산출하는 조사사업이다. 본 연구에서는 건강지표 생산 확대, 조사 자료 활용도 향상 등 20년간의 성과를 요약하고 사회환경과 조사여건 변화를 반영한 건강통계 생산의 발전 방안을 제시하였다.
Key Message
The Korea National Health and Nutrition Examination Survey (KNHANES) is an ongoing surveillance system that was initiated in 1998 based on Ar¬ticle 16 of the National Health Promotion Act to produce nationwide statistics regarding the health status, health behaviors, and food and nutrient consumption of the Korean population. In this study, the 20-year accomplishments of the KNHANES including vigorous production of health indicators and improvement of data utilization are summarized, and future plans are presented to improve the health statistics to reflect changes in the social and survey environments.

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Original Article
Estimation and change of edentulism among the Korean population: Korea National Health and Nutrition Examination Survey 2007-2018
Na-Hyeon Yu, Ah Ra Shin, Song Vogue Ahn, Keun-Bae Song, Youn-Hee Choi
Epidemiol Health. 2021;43:e2021020.   Published online April 2, 2021
DOI: https://doi.org/10.4178/epih.e2021020
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
To estimate the prevalence of edentulism according to the socio-demographic variables of Korean adults between 2007 and 2018 and to analyze the trends.
METHODS
This study was conducted using raw data from the Korea National Health and Nutrition Examination Survey (KNHANES) from 2007 to 2018. Edentulism was defined as the absence of upper and lower teeth or the retained root of the missing teeth. To obtain the prevalence of edentulism, complex sample frequency analysis and regression analysis were performed according to the socio-demographic variables to represent the national population. The Korean population structure in 2005 was exploited as a standard population to calculate age-standardized edentulism.
RESULTS
The prevalence of edentulism in 2016-2018 was 9.7% in the Korean elderly, and the change of age-standardized edentulism steadily declined over time from 2007, 12.8%. In particular, it decreased by approximately 20% in the period between 2016 and 2018 compared to that in 2007 for those in their 80s. The trend of the prevalence according to gender decreased significantly in women. According to the level of education, the greatest decrease was seen in the group with the lowest education, although the prevalence itself was higher than that seen in those who were more educated.
CONCLUSIONS
The prevalence of edentulism among the older Korean population has decreased over time. However, the concern is on those with lower education and men as these groups are still at higher risk for edentulism.
Summary
Korean summary
치아상실은 구강건강의 지표로써 현재 국외에서는 무치악 유병률 추이 파악뿐만 아니라 다국 간의 비교가 이루어지고 있지만 아시아의 주요국가 중 하나인 한국의 무치악 유병률 추이에 대해서는 아직 연구되지 않았다. 연구 결과, 2016-2018년 한국 노인의 무치악 유병률은 9.72%였으며, 연령표준화된 무치악 유병률의 변화는 2007 년 12.8 %에서 꾸준히 감소했다. 결론적으로 무치악으로 어려움을 겪을 수 있는 교육수준이 낮은 노인과 남성에 대해선 지속적인 관심이 필요하다.
Key Message
Tooth loss is an indicator of oral health. At present, not only the trend of edentulous prevalence is being identified abroad, but also multi-country comparisons are being made, but the trend of edentulous prevalence in Korea, one of the major Asian countries, has not been studied. As a result of the study, the prevalence of edentulous in Korea in 2016-2018 was 9.72%, and the change in the age-standardized edentulous prevalence steadily decreased from 12.8% in 2007. In conclusion, continuous attention is needed for the elderly and men with low educational standards who may suffer from edentulous.

Citations

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Data Profile
Establishment of the Korea National Health and Nutrition Examination Survey air pollution study dataset for the researchers on the health impact of ambient air pollution
Myung-Jae Hwang, Jisun Sung, Miryoung Yoon, Jong-Hun Kim, Hui-Young Yun, Dae-Ryun Choi, Youn-Seo Koo, Kyungwon Oh, Sungha Yun, Hae-Kwan Cheong
Epidemiol Health. 2021;43:e2021015.   Published online February 8, 2021
DOI: https://doi.org/10.4178/epih.e2021015
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  • 25 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
To provide a nationwide representative dataset for the study on health impact of air pollution, we combined the data from the Korea National Health and Nutrition Examination Survey with the daily air quality and weather data by matching the date of examination and the residential address of the participants. The database of meteorological factors and air quality as sources of exposure data were estimated using the Community Multiscale Air Quality model. The linkage dataset was merged by three ways; administrative district, <i>si-gun-gu</i> (city, county, and district), and geocode (in latitude and longitude coordinate units) based on the participants’ residential address, respectively. During the study period, the exposure dataset of 85,018 individuals (38,306 men and 46,712 women) whose examination dates were recorded were obtained. According to the definition of exposure period, the dataset was combined with the data on short-term, mid-term, and long-term exposure to air pollutants and the meteorological indices. Calculation of the daily merged dataset’s average air pollution linked by <i>si-gun-gu</i> and geocode units showed similar results. This study generated a daily average of meteorological indices and air pollution exposure dataset for all regions including rural and remote areas in Korea for 11 years. It is expected to provide a platform for the researchers studying the health impact of air pollution and climate change on the representative population and area, which may facilitate the establishment of local health care plans by understanding the residents’ health status at the local as well as national level.
Summary
Korean summary
-2007년부터 2017년까지 11년간 국민건강영양조사의 검진조사 대상자의 검진일자와 지리정보를 기준으로 85,018명에 대해 기상 및 대기오염 모델링 자료를 결합하여 조사 대상자의 거주지주소를 이용하여 시·군·구 단위와 주소 기반 위경도 좌표를 기준으로 각각 노출자료를 결합함. -대기오염의 단기노출, 중기노출, 장기노출의 건강영향을 평가하기 위해 지연효과(lag effect)를 적용하여 각 건강자료와 결합함. -기상 및 대기오염 모델링 자료와 연계된 국민건강영양조사의 활용을 위한 data profile을 제시함.
Key Message
-We built a dataset for air pollution research by combining meteorological and air pollution modeling data through CMAQ for 85,018 individuals based on the date of examination and geographic information of the Korea National Health and Nutrition Examination Survey participants for 11 years, from 2007 to 2017. -Each exposure data was combined based on si-gun-gu (city, county, and district) and geocode (in latitude and longitude coordinate units) based on the participants’ residential address. -To evaluate the health effects of short-, medium- and long-term air pollution exposure, the lag values of days, months, and years was applied and combined with each health data. -A data profile was presented for the Korea National Health and Nutrition Examination Survey linked to meteorological and air pollution modeling data.

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    Journal of Korean Medical Science.2025;[Epub]     CrossRef
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    Eunjin Kwon, Taiyue Jin, Young-Ah You, Byungmi Kim
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Original Articles
Factors associated with indoor smoking at home by adults across Korea: a focus on socioeconomic status
Bomgyeol Kim, Yejin Lee, Young Dae Kwon, Tae Hyun Kim, Jin Won Noh
Epidemiol Health. 2020;42:e2020067.   Published online October 28, 2020
DOI: https://doi.org/10.4178/epih.e2020067
  • 25,429 View
  • 211 Download
  • 6 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Secondhand smoke is an issue that cannot be ignored due to its various negative effects. Especially, secondhand smoke inside the household is an area where health policy must pay attention as it can affect all age groups. This study aims to identify the factors associated with smoking inside the household focusing on socioeconomic status in Korea.
METHODS
We used data from the Community Health Survey of 2017 and a total of 33,462 participated in the study. Data were analyzed through IBM SPSS version 25.0 to conduct binary logistic regression analysis.
RESULTS
Results indicated that indoor smoking had a significant association with socioeconomic status. This association was more marked in those participants who had low household income or those with elementary school education level or less. Furthermore, the study indicates that when the smoker is a woman, older, has higher stress, and is a heavier smoker, the probability of her smoking inside the house is higher.
CONCLUSIONS
Based on the results, it is meaningful that this study has found the factors of smoking inside household. The result identify the factors associated with indoor smoking at home, and it can be used as baseline data for developing new smoking cessation policies.
Summary
Korean summary
이 연구는 가정 실내 흡연과 관련된 다양한 요인들을 파악하였으며, 소득, 교육수준과 같은 사회경제적 요인과 가정 실내 흡연의 연관성을 확인하였다. 이를 통해 가정 실내 흡연 감소를 위한 금연 정책의 근거자료로 활용될 수 있을 것으로 기대된다.

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  • Prevalence and predictors of indoor secondhand smoke (SHS) exposure among the Nigerian household population: evidence from the Demographic and Health Survey 2024
    Vishal Ramesh Tikhute, Oluwayemisi Ayomipo Adaka, Prashant Gawai
    International Journal of Health Promotion and Education.2026; : 1.     CrossRef
  • Trends in the prevalence and factors associated with indoor smoking in 24 countries Party to the WHO FCTC: implications for equitable policy implementation
    Daniel Bogale Odo, Olalekan Ayo-Yusuf, Yonatan Dinku, Alemayehu Gonie Mekonnen, Raglan Maddox
    BMJ Global Health.2025; 10(2): e017110.     CrossRef
  • Factores asociados al consumo de cigarro en un distrito peruano de nivel socioeconómico alto
    Alberto Guevara-Tirado
    Revista Facultad Nacional de Salud Pública.2025;[Epub]     CrossRef
  • Tobacco usage in the home: a cross-sectional analysis of heated tobacco product (HTP) use and combustible tobacco smoking in Japan, 2023
    Satomi Odani, Takahiro Tabuchi
    Environmental Health and Preventive Medicine.2024; 29: 11.     CrossRef
  • Impacts of smoking ban policies on billiard halls sales in South Korea using objective sales information of a credit card company: A quasi-experimental study (Preprint)
    Jin-Won Noh, Jooyoung Cheon, Hohyun Seong,, Young Dae Kwon, Ki-Bong Yoo
    JMIR Public Health and Surveillance.2023;[Epub]     CrossRef
Diabetes and prediabetes prevalence among young and middle-aged adults in India, with an analysis of geographic differences: findings from the National Family Health Survey
Siddardha G. Chandrupatla, Isma Khalid, Tejdeep Muthuluri, Satyanarayana Dantala, Mary Tavares
Epidemiol Health. 2020;42:e2020065.   Published online September 18, 2020
DOI: https://doi.org/10.4178/epih.e2020065
  • 34,665 View
  • 460 Download
  • 27 Web of Science
  • 23 Crossref
AbstractAbstract PDF
Abstract
OBJECTIVES
This study aimed to approximate the prevalence of hyperglycemia in India.
METHODS
The study was conducted using the Demographic and Health Survey 2015-16 (also known as the National Family Health Survey-4), which surveyed 811,808 individuals using a stratified, multistage, cluster sampling design. This cross-sectional survey recorded socio-demographic and anthropometric data, including blood glucose levels, of adults aged 18 years to 54 years.
RESULTS
The final analysis included 718,597 individuals, of whom 49.90% (weighted) were males. The overall prevalence of diabetes was 6.65% and that of prediabetes was 5.57%. A positive association was seen with urban residence, geographic region, sex, age, body mass index, socioeconomic status, and hypertension. Approximately two-thirds of individuals with diabetes lived in urban areas, and about half of the urban population was considered overweight/obese. South India showed a higher prevalence of diabetes (prevalence ratio, 2.01; p<0.001) than northern India.
CONCLUSIONS
Hyperglycemia (diabetes and prediabetes) has a high prevalence in India and is a major public health issue. Diabetes is unevenly distributed based on geographic location and urbanization. Prevention, early detection, and treatment strategies should consider this uneven distribution of diabetes.
Summary

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    Kona Chandralekha, Jayanta Kumar Bora, Amrit Virk, Rajaram Yadav
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    Vaidya Ruchi, Gupta Pallavi, S. Renukadevi, Chaudhury Nayanjeet
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Gender difference in socioeconomic factors affecting suicidal ideation and suicidal attempts among community-dwelling elderly: based on the Korea Community Health Survey
Jin-Young Jeong
Epidemiol Health. 2020;42:e2020052.   Published online July 13, 2020
DOI: https://doi.org/10.4178/epih.e2020052
  • 26,794 View
  • 256 Download
  • 6 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study was performed to explore socioeconomic factors associated with suicidal ideation and suicidal attempts among the local community’s resident elderly.
METHODS
The subjects included 129,277 participants aged 65 years or above of the Korea Community Health Survey conducted in 2013 and 2017. Based on the questions for suicidal ideation and suicidal attempts, the subjects were divided into a no suicidal ideation group (n=111,344), a suicidal ideation group (n=17,487), and a suicidal attempt group (n=446). All analyses were stratified by gender, and a complex sample logistic regression analysis was performed to analyze associated factors. SAS version 9.4 was used for all analyses with a significance level of 0.05.
RESULTS
Common factors associated with suicidal ideation in both genders included marital status, frequency of contact with friends, social activity, and average monthly household income. Economic activity was demonstrated as relevant only to the elderly men subjects. According to the analysis, factors associated with suicidal attempts were the recipients of the National Basic Living Security Act for the elderly men compared to age, frequency of contact with family, frequency of contact with friends, and average monthly household income for the elderly women.
CONCLUSIONS
The study revealed that socioeconomic factors leading to suicidal ideation were similar in the elderly of both genders, while a difference was demonstrated for factors associated with suicidal attempts between the elderly of both genders. It is expected that the results of this study may be used as the basis for screening the local community’s elderly with a high suicidal risk, and in the development of suicide prevention services.
Summary
Korean summary
2013년과 2017년 지역사회건강조사에 참여한 129,277명의 노인을 대상으로 자살시도에 관련된 사회-경제적 요인을 탐색하였다. 분석결과, 남성 노인의 자살시도 관련요인은 국민기초생활수급자, 여성 노인의 자살시도 관련요인은 연령, 가족접촉빈도, 친구접촉빈도, 그리고 월평균가구소득으로 나타났다. 본 결과가 지역사회 거주 노인의 자살 고위험군 선별 및 자살 예방서비스 개발에 기초자료로 활용되기를 기대한다.

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Socio-demographic inequalities in the uptake of Papanicolaou tests in Peru: analysis of the 2015-2017 Demographic and Family Health Survey
Antonio Barrenechea-Pulache, Emmanuel Avila-Jove, Akram Hernández-Vásquez, Fernando M. Runzer-Colmenares
Epidemiol Health. 2020;42:e2020043.   Published online June 18, 2020
DOI: https://doi.org/10.4178/epih.e2020043
  • 30,347 View
  • 225 Download
  • 7 Web of Science
  • 4 Crossref
AbstractAbstract PDF
Abstract
OBJECTIVES
This study was conducted to analyze the inequalities in Papanicolaou test (also referred to as the Pap smear) uptake according to the socio-demographic characteristics of Peruvian women 30 years to 59 years of age using information from the 2015-2017 Demographic and Family Health Survey (ENDES, acronym in Spanish).
METHODS
This is an analytical, cross-sectional study based on information acquired from the 2015-2017 ENDES surveys. Socio-demographic characteristics were reported using absolute frequencies and weighted proportions with 95% confidence intervals, considering results with a p-value <0.05 as statistically significant. Concentration curves (CCs) and concentration indices (IndCs) were created based on the interaction of the wealth index and uptake of Pap smears, taking into account the different characteristics of the population studied for the measure of inequalities.
RESULTS
All the CCs were distributed below the line of equality. Similarly, all the IndCs were higher than zero, indicating inequality in the uptake of Pap smears, favoring those with a higher wealth index. The highest IndC values were obtained from women aged 50-59 (IndC, 0.293), those who lived in the jungle (IndC, 0.230), and those without health insurance (IndC, 0.173).
CONCLUSIONS
We found socio-demographic inequalities in the uptake of Pap smears in Peru, favoring women with a higher wealth index. More funding is needed to promote cervical cancer screening programs and to create systems that ensure equal access to healthcare in Peru.
Summary

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Factors affecting awareness of myocardial infarction symptoms among the general public in Korea
Kyong Sil Park
Epidemiol Health. 2020;42:e2020032.   Published online May 18, 2020
DOI: https://doi.org/10.4178/epih.e2020032
  • 29,972 View
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We aimed to determine the level of awareness of myocardial infarction (MI) symptoms among the general public in Korea and identify factors affecting awareness of MI symptoms using data from the 2017 Korea Community Health Survey (KCHS).
METHODS
This is a cross-sectional study using KCHS data. Based on five questions about MI symptoms, participants were divided into an awareness group (replied ‘yes’ to all five questions) and an unawareness group (replied ‘no’ or ‘not sure’ to at least one of five questions) for analysis.
RESULTS
Of a total of 228,281 participants, 42.4% were aware of MI symptoms. There was a high level of awareness of chest pain and shortness of breath, but a low level of awareness of gastrointestinal symptoms and pain in the arm, shoulder, jaw, neck, and back. While women had a higher level of overall awareness relative to men, they showed a lower level of awareness regarding chest pain and discomfort. The factors affecting awareness of MI symptoms were gender, age, education level, occupation, smoking, drinking, physical inactivity, and cardiovascular disease risk factors.
CONCLUSIONS
In order to enhance awareness of MI symptoms among the general population, appropriate education and promotion efforts must be implemented based on gender, age, education level, and occupation. Moreover, active efforts by the government, educational institutions, and medical institutions are necessary to improve awareness of both typical and atypical MI symptoms. Furthermore, health policies to promote reduced smoking and drinking and increased physical activity, as well as continuous monitoring and management of individuals with cardiovascular disease risk factors, are required.
Summary
Korean summary
2017년 지역사회건강조사 자료를 분석한 결과, 한국의 심근경색증 증상의 인지율은 42%로 낮은 인식을 보였다. 한국의 지역사회 내 일반인들의 심근경색증 증상의 인지율을 제고하기 위해 성별, 연령, 교육수준, 직업을 고려하여 교육 및 홍보를 실시해야 한다. 그리고, 전형적인 심근경색증 증상뿐만 아니라 비전형적인 심근경색증 증상에 대한 인식에 대한 정부, 교육기관, 의료기관 등의 적극적인 노력이 필요하다. 또한, 금연, 금주, 신체활동 증진에 대한 보건정책적 관리방안과 심혈관질환 위험요인을 가진 대상자들의 지속적인 모니터링 및 관리가 필요하다.

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    Frontiers in Public Health.2023;[Epub]     CrossRef
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    BMC Public Health.2023;[Epub]     CrossRef
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    Journal of the American Heart Association.2021;[Epub]     CrossRef
Characteristics of depressive symptoms in middle-aged family members of dementia patients: 2017 Korea Community Health Survey
Jinbeom Park, Won-Chul Lee, Hyunsuk Jeong, Nayoung Hong, BoYoung Bae, Hyeon Woo Yim
Epidemiol Health. 2020;42:e2020031.   Published online May 15, 2020
DOI: https://doi.org/10.4178/epih.e2020031
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AbstractAbstract PDFSupplementary Material
Abstract
OBJECTIVES
The characteristics of depressive symptoms in the family members of home-dwelling patients with dementia have not been clearly reported. This study aimed to investigate the characteristics of depressive symptoms in middle-aged family members living with a patient with dementia.
METHODS
This study used the data from the nationwide 2017 Korea Community Health Survey. Among the 228,381 survey participants, 77,276 participants in their 40s and 50s were finally selected for this study. The participants consisted of 760 family members of home-dwelling dementia patients and 76,516 general family members comprising a control group.
RESULTS
The positive rate of Patient Health Questionnaire-9 (PHQ-9)-measured depressive symptoms was significantly higher in the family members of home-dwelling dementia patients (4.4%; control group: 1.9%). After adjusting for potential confounders, the prevalence of PHQ-measured depressive symptoms was 1.72 times (95% confidence interval [CI], 1.03 to 2.85) higher in the family members of home-dwelling dementia patients compared to the control group. The positive rate of depressive symptoms was 2.26 times higher (95% CI, 1.26 to 4.05) in the female middle-aged family members of home-dwelling dementia patients compared to the control group. In addition, those who reported having symptoms almost every day in the PHQ-9 questions had significantly higher positive rates on questions about loss of interest, depression, sleep disturbance, fatigue, poor appetite, and suicidal ideation, and not on questions regarding feelings of worthlessness and psychomotor agitation, compared to the control group.
CONCLUSIONS
Active interventions are needed to relieve depression in the family members of home-dwelling dementia patients.
Summary

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The effects of mental health on recurrent falls among elderly adults, based on Korean Community Health Survey data
Kyung Hee Jo, Jong Park, So Yeon Ryu
Epidemiol Health. 2020;42:e2020005.   Published online February 2, 2020
DOI: https://doi.org/10.4178/epih.e2020005
  • 32,813 View
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  • 20 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study aimed to identify the effect of mental health on frequency of falls (single and recurrent falls) among elderly adults.
METHODS
Data were drawn from the 2015 Korean Community Health Survey. A chi-square test was conducted to compare differences in fall frequency according to health-related behaviors, chronic diseases, and mental health. Subsequently, multinomial logistic regression analysis was used to identify the effects of mental health on single and recurrent falls based on variables found to be significant in the chi-square test.
RESULTS
Recurrent falls were found to be more risky than single falls. Depression was significantly related to single falls (odds ratio [OR], 1.27; 95% confidence interval [CI], 1.12 to 1.44). Depression (OR, 1.56; 95% CI, 1.38 to 1.76), sleep disorder (5 hours or less: OR, 1.12; 95% CI, 1.02 to 1.23; more than 9 hours: OR, 1.24; 95% CI, 1.07 to 1.44, respectively), and subjective stress (OR, 2.30; 95% CI, 1.90 to 2.78) were significantly related to recurrent falls.
CONCLUSIONS
The study’s findings suggest that specialized fall prevention programs are needed to address different types of falls in elderly adults. To prevent recurrent falls, systematic treatment strategies and rehabilitation training must improve physical function and mental health.
Summary
Korean summary
우리나라 노인에서 정신건강이 낙상에 미치는 영향을 확인하였고, 그 결과 단순낙상은 우울감 경험을 한 경우 낙상발생 위험이 증가했으며, 반복낙상은 우울감을 경험하고, 수면장애가 있으며(수면시간 6시간 미만, 9시간 이상), 주관적 스트레스가 커질수록 낙상 위험이 증가하였다. 최종적으로 노인의 정신건강이 반복낙상에 미치는 영향이 더 큰 것을 확인하였다. 본 연구결과를 통해 낙상 예방 및 관리를 위한 보건사업을 제시하고, 반복낙상자의 정신적/신체적 기능 증진을 위한 치료전략과 재활훈련 계획의 근거자료로 활용할 수 있을 것으로 생각된다.

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Determinants of early initiation of breastfeeding in Peru: analysis of the 2018 Demographic and Family Health Survey
Akram Hernández-Vásquez, Horacio Chacón-Torrico
Epidemiol Health. 2019;41:e2019051.   Published online December 25, 2019
DOI: https://doi.org/10.4178/epih.e2019051
  • 30,717 View
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  • 10 Web of Science
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AbstractAbstract PDF
Abstract
OBJECTIVES
Early initiation of breastfeeding (EIBF) is one of the most cost-effective strategies to reduce neonatal mortality. We sought to determine the prevalence and determinants of EIBF in Peru.
METHODS
We performed a cross-sectional analytical study of the 2018 Peruvian Demographic and Family Health Survey as a secondary data source. In total, 19,595 children born during the 5 years prior to the survey were included in the study. The dependent variable (EIBF status), socio-demographic variables, and pregnancy-related variables were analyzed using a multivariate logistic regression model to identify the determinants of EIBF.
RESULTS
The prevalence of EIBF in the study population was 49.7%. Cesarean deliveries were associated with a lower likelihood of EIBF (adjusted odds ratio [aOR], 0.06; 95% confidence interval [CI], 0.05 to 0.07) than were vaginal deliveries. Newborns born at public health centers (aOR, 1.37; 95% CI, 1.15 to 1.65) had a higher rate of EIBF than those not born at public or private health centers. Women from the jungle region (aOR, 2.51; 95% CI, 2.17 to 2.89) had higher odds of providing EIBF than those from the coast. Mothers with more than a secondary education (aOR, 0.65; 95% CI, 0.55 to 0.76) were less likely to breastfeed during the first hour of the newborn’s life than women with primary or no education.
CONCLUSIONS
More than half of Peruvian children do not breastfeed during the first hour after birth. The major determinants of EIBF status were the delivery mode and the region of maternal residence. Strategies are needed to promote early breastfeeding practices.
Summary

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Individual and regional factors associated with suicidal ideation among Korean elderly: a multilevel analysis of the Korea Community Health Survey
Sang Hee Jeong, Byung Chul Chun
Epidemiol Health. 2019;41:e2019022.   Published online May 26, 2019
DOI: https://doi.org/10.4178/epih.e2019022
  • 26,817 View
  • 294 Download
  • 12 Web of Science
  • 11 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study aimed to identify the individual and regional characteristics that influence suicidal ideation among the Korean elderly population.
METHODS
Using data collected from the 2013 Korea Community Health Survey, a multilevel analysis was performed to establish an understanding of individual behavioral patterns and regional influences on suicidal ideation.
RESULTS
Among the 77,407 individuals sampled, 11,236 (14.5%) elderly people over 60 years of age experienced suicidal ideation. Among individual factors, age, frequency of communication with friends, religious activity, social activity, leisure activity, trust in neighbors, subjective stress level, depressive symptoms, and subjective health status were significantly associated with suicidal ideation. The results showed that the lower the regional deprivation level, the higher the suicidal ideation odds ratio. In terms of regional size, the most significant effects were found in rural areas.
CONCLUSIONS
This study suggested that suicidal ideation in the elderly is associated with community factors, such as the regional deprivation index, as well as personal factors.
Summary
Korean summary
본 연구는 60세 이상 연령의 개인 요인에 따른 자살 생각에 영향을 미치는 요인과 지역 요인을 모두 반영하여 자살 생각에 영향을 미치는 요인을 파악하는 것으로 지역사회건강조사에 응답한 60대 이상 노인 77,407명 중 11,236(14.5%)명을 표본대상으로 선정하여 노인의 자살생각 가능성과 관련된 개인의 행태와 지역 또는 집단에서 영향력을 파악하기 위한 다수준 분석을 실시하였다. 결과적으로 본 연구는 60세이상의 노인에서 자살 생각에 개인적 요인 뿐 아니라 지역박탈지수와 같은 지역 요인이 관여한다는 점을 시사한다.

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Associations between socioeconomic status and blood cadmium levels in Korea
Yongho Jee, Sung-il Cho
Epidemiol Health. 2019;41:e2019018.   Published online May 15, 2019
DOI: https://doi.org/10.4178/epih.e2019018
  • 26,348 View
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AbstractAbstract AbstractSummary PDF
Abstract
OBJECTIVES
Although smoking is associated with both low socioeconomic status and blood cadmium (Cd) levels, the association between socioeconomic status and Cd levels remains unclear. Therefore, our study aimed to examine this association and to clarify whether smoking is a confounding or mediating variable in this relationship.
METHODS
Data (n=7,734) were drawn from the Korea National Health and Nutrition Examination Survey (KNHANES, 2008- 2011), including years that contained data on blood Cd and urinary cotinine levels. We investigated the associations of income, education, and occupation with blood Cd levels. Smoking was investigated by categorizing participants by smoking status (never, former, and current) and pack-years into quartiles. The weekly frequency of rice and barley intake was analyzed to gain insights into participants’ dietary patterns. Additionally, urinary cotinine levels were used to ensure the validity of the smoking variables.
RESULTS
Participants earning a low income and with less formal education had higher blood Cd levels. After controlling for smoking, the association between income and Cd levels substantially weakened. Further controlling for education, the association between income and Cd levels disappeared. However, there was a strong negative association between education and Cd levels, even after controlling for smoking history, pack-years, and urinary cotinine levels.
CONCLUSIONS
In cross-sectional data from the KNHANES, blood Cd levels were significantly higher among those with a low income and less formal education. Smoking history contributed to, but did not fully explain, these associations.
Summary
Korean summary
흡연은 낮은 사회경제적 상태와, 높은 혈중 카드뮴 상태 등과 관련이 있다고 보고가 되어 왔지만, 사회경제적 상태와 혈중 카드뮴 상태의 연관성은 불분명하다. 따라서, 본 연구는 혈중 카드뮴 농도와 사회경제적 상태와의 관련성을 분석하고, 흡연이라는 변수가 이 관련성에 어떠한 영향을 주는지 보고자 하였다.

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    Soonsu Shin, Dajeong Ham, Minkyo Song, Sanghyuk Bae
    Journal of Korean Medical Science.2026;[Epub]     CrossRef
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Comparison of estimates and time series stability of Korea Community Health Survey and Korea National Health and Nutrition Examination Survey
Ji Son Ki, Ho Kim
Epidemiol Health. 2019;41:e2019012.   Published online April 7, 2019
DOI: https://doi.org/10.4178/epih.e2019012
  • 29,457 View
  • 297 Download
  • 4 Web of Science
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AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
In South Korea, there are two nationwide health surveys conducted by the Korea Centers for Disease Control and Prevention: the Korea Community Health Survey (KCHS) and Korea National Health and Nutrition Examination Survey (KNHANES). The two surveys are directly comparable, as they have the same target population with some common items, and because both surveys are used in various analyses, identifying the similarities and disparities between the two surveys would promote their appropriate use. Therefore, this study aimed to compare the estimates of six variables in KCHS and eight variables in KNHANES over a six-year period and compare time series stability of region-specific and sex- and age-specific subgroup estimates.
METHODS
Data from adults aged 19 years or older in the 2010-2015 KCHS and KNHANES were examined to analyze the differences of estimates and 95% confidence interval for self-rated health, current smoking rate, monthly drinking rate, hypertension diagnosis rate, diabetes diagnosis rate, obesity prevalence, hypertension prevalence, and diabetes prevalence. The variables were then clustered into subgroups by city as well as sex and age to assess the time series stability of the estimates based on mean square error.
RESULTS
With the exception of self-rated health, the estimates taken based on questionnaires, namely current smoking rate, monthly drinking rate, hypertension diagnosis rate, and diabetes diagnosis rate, only differed by less than 1.0%p for both KCHS and KNHANES. However, for KNHANES, estimates taken from physical examination data, namely obesity prevalence, hypertension prevalence, and diabetes prevalence, differed by 1.9-8.4%p, which was greater than the gap in the estimates taken from questionnaires. KCHS had a greater time series stability for subgroup estimates than KNHANES.
CONCLUSIONS
When using the data from KCHS and KNHANES, the data should be selected and used based on the purpose of analysis and policy and in consideration of the various differences between the two data.
Summary
Korean summary
본 연구는 지역사회건강조사와 국민건강영양조사의 2010년부터 2015년까지 6년간의 자료로 각각 6개, 8개 변수의 추정치를 비교하였다. 설문변수 간의 추정치 차이보다 설문변수와 검진변수간의 추정치의 더 차이가 컸고 하위그룹별 시계열 변동은 지역사회건강조사가 더 안정적이었다.

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Development and validation of a sunlight exposure questionnaire for urban adult Filipinos
Marc Gregory Yu, Nina Castillo-Carandang, Maria Elinor Grace Sison, Angelique Bea Uy, Katrina Lenora Villarante, Patricia Maningat, Elizabeth Paz-Pacheco, Eileen Abesamis-Cubillan
Epidemiol Health. 2018;40:e2018050.   Published online October 11, 2018
DOI: https://doi.org/10.4178/epih.e2018050
  • 33,488 View
  • 275 Download
  • 5 Web of Science
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AbstractAbstract PDF
Abstract
OBJECTIVES
To develop and validate a self-reported sunlight exposure questionnaire (SEQ) for urban adult Filipinos.
METHODS
The study included adults (19-76 years old) in Metro Manila, Philippines, well-versed in the Filipino (Tagalog) language and had resided in Metro Manila for at least 1 year. Exclusion criteria included pregnancy, active skin disorders, and immunocompromised states. An expert panel created a questionnaire in Likert-scale format based on a conceptual framework and 4 existing instruments. The study proceeded in 4 phases: questionnaire item development, translation and back-translation, pretesting, and construct validity and reliability testing using factor analysis, the Cronbach alpha coefficient, and the paired t-test.
RESULTS
A 25-item, self-administered, Filipino (Tagalog) SEQ answerable using a 4-point Likert scale was created. The questionnaire was administered to 260 adult participants twice at a 2-week interval, with all participants completing both the first and second rounds of testing. All questionnaire items possessed adequate content validity indices of at least 0.86. After factor analysis, 3 questionnaire domains were identified: intensity of sunlight exposure, factors affecting sunlight exposure, and sun protection practices. Internal consistency was satisfactory for both the overall questionnaire (Cronbach alpha, 0.80) and for each of the domains (Cronbach alpha, 0.74, 0.71, and 0.72, respectively). No statistically significant differences were observed in the responses between the first and second rounds of testing, indicating good test-retest reliability.
CONCLUSIONS
We developed a culturally-appropriate SEQ with sufficient content validity, construct validity, and reliability to assess sunlight exposure among urban adult Filipinos in Metro Manila, Philippines.
Summary

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    Xiaoxia Wang, Qin Wang, Zhe Li, Mengjie Chen, Maoting Guo, Laixi Kong, Liyuan Chen, Xiaolong Li, Junjun Li, Qieyan Cao, Zhenhua Luo, Zhenzhen Xiong, Dan Zhao
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    Ilham Lhilali, Noura Zouine, Aziza Menouni, Lode Godderis, Marie-Paule Kestemont, Adil El Midaoui, Samir El Jaafari, Younes Filali-Zegzouti
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    Yasir Mahmood, Nazish Waris, Asher Fawwad, Abdul Basit
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