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Korea Nurses’ Health Study and the health of reproductive-aged women: a cohort profile
Chiyoung Cha, Heeja Jung, Sue Kim, Jung Eun Lee, Kwang-Pil Ko, Eunyoung Cho, Hyun-Young Park, Joong-Yeon Lim, Bo Mi Song, Sihan Song, Soojin Park, Aram Cho
Epidemiol Health. 2024;46:e2024048.   Published online April 30, 2024
DOI: https://doi.org/10.4178/epih.e2024048
  • 2,035 View
  • 107 Download
AbstractAbstract AbstractSummary PDF
Abstract
The Korea Nurses’ Health Study (KNHS) is an ongoing, large-scale, prospective cohort study of women nurses, focusing on the effects of occupational, environmental, and lifestyle factors on the health of women. The first KNHS survey was performed in 2013-2014 (n=20,613). As of December 2023, 11 follow-up surveys have been conducted. Participants who were pregnant were asked to participate in the early pregnancy survey (n=2,179) and postpartum survey after giving birth (n=2,790). The main variables included socio-demographic, work-related, lifestyle, physical, mental, and women’s health factors. Blood, urine, and toenail samples were collected from a participant subgroup of the first survey (n=1,983). The subgroups of the second survey completed a food frequency questionnaire in 2019 (n=300) and 2021 (n=871). In 2020, a subgroup of the first survey answered a coronavirus disease 2019-related survey (n=975). To examine various health-related factors in young adults, new participants were added to the KNHS cohort in the 11th (n=1,000) and 12th (n=1,002) surveys. The KNHS cohort will help identify health and illness determinants in Korean women. Data can be accessed at https://coda.nih.go.kr/frt/index.do.
Summary
Korean summary
한국간호사건강연구(Korea Nurses’ Health Study, KNHS)는 2013년부터 수행되고 있는 대규모 전향적 추적관찰 코호트 연구이다. 본 연구는 질병력, 약물복용력, 임신력, 여성건강, 정신건강(우울, 스트레스, 피로 등), 생활습관(흡연, 음주, 신체활동, 수면 등), 근무특성을 조사하여 여성건강에 장기적으로 미치는 영향을 파악하고 한국 고유의 여성건강 결정요인을 도출하는 것을 목표로 한다.
Key Message
The Korea Nurses' Health Study (KNHS) is a large-scale, prospective cohort study that has been conducted since 2013. It measures various factors affecting reproductive-aged women, including disease history, medication usage, pregnancy, women's health characteristic, mental health (such as depression, stress, and fatigue), lifestyle characteristic (including smoking, drinking, and physical activity, sleep), and work-related characteristics. The study aims to understand the long-term impact on women's health and identify unique determinants of women's health specific to Korea.
Original Article
Socioeconomic inequalities in obesity among Korean women aged 19-79 years: the 2016 Korean Study of Women’s Health-Related Issues
Eunji Choi, Ha Na Cho, Da Hea Seo, Boyoung Park, Sohee Park, Juhee Cho, Sue Kim, Yeong-Ran Park, Kui Son Choi, Yumie Rhee
Epidemiol Health. 2019;41:e2019005.   Published online February 13, 2019
DOI: https://doi.org/10.4178/epih.e2019005
  • 17,181 View
  • 288 Download
  • 6 Web of Science
  • 5 Crossref
AbstractAbstract AbstractSummary PDF
Abstract
OBJECTIVES
While the prevalence of obesity in Asian women has remained stagnant, studies of socioeconomic inequalities in obesity among Asian women are scarce. This study aimed to examine the recent prevalence of obesity in Korean women aged between 19 years and 79 years and to analyze socioeconomic inequalities in obesity.
METHODS
Data were derived from the 2016 Korean Study of Women’s Health-Related Issues. The chi-square test and logistic regression analysis were used to analyze the associations between socioeconomic factors and obesity using Asian standard body mass index (BMI) categories: low (<18.5 kg/m2 ), normal (18.5-22.9 kg/m2 ), overweight (23.0-24.9 kg/m2 ), and obese (≥25.0 kg/ m2 ). As inequality-specific indicators, the slope index of inequality (SII) and relative index of inequality (RII) were calculated, with adjustment for age and self-reported health status.
RESULTS
Korean women were classified into the following BMI categories: underweight (5.3%), normal weight (59.1%), overweight (21.2%), and obese (14.4%). The SII and RII revealed substantial inequalities in obesity in favor of more urbanized women (SII, 4.5; RII, 1.4) and against of women who were highly educated (SII, -16.7; RII, 0.3). Subgroup analysis revealed inequalities in obesity according to household income among younger women and according to urbanization among women aged 65-79 years.
CONCLUSIONS
Clear educational inequalities in obesity existed in Korean women. Reverse inequalities in urbanization were also apparent in older women. Developing strategies to address the multiple observed inequalities in obesity among Korean women may prove essential for effectively reducing the burden of this disease.
Summary
Korean summary
한국 성인 여성의 과체중 및 비만유병률은 서구여성에 비해 낮으며 2005년 이후 큰 변화 없이 약40%대로 일정하게 유지되어왔으나, 사회경제적불평등에 대한 연구는 체계적으로 이루어지지 않음. 경사불평등(Slope index of inequality)과 상대불평등(Relative index of inequality) 지표를 사용하여 비만유병률에서 발견되는 사회경제적불평등을 조사한 결과, 교육수준별 불평등이 유의하게 나타남. 19-44세의 젊은 여성층에서는 소득수준이 낮은 집단에, 65-79세의 노년기 여성층에서는 도시화된 지역에 사는 집단에 비만유병률이 치중되어있음.

Citations

Citations to this article as recorded by  
  • Disparities in Obesity Rates among Adults: Analysis of 514 Districts in Indonesia
    Dumilah Ayuningtyas, Dian Kusuma, Vilda Amir, Dwi Hapsari Tjandrarini, Pramita Andarwati
    Nutrients.2022; 14(16): 3332.     CrossRef
  • Socioeconomic Disparities in Cardiovascular Health in South Korea
    Chi-Young Lee, Eun-Ok Im
    Journal of Cardiovascular Nursing.2021; 36(1): 8.     CrossRef
  • Incidence and risk of venous thromboembolism according to primary treatment in women with ovarian cancer: A retrospective cohort study
    Jin-Sung Yuk, Banghyun Lee, Kidong Kim, Myoung Hwan Kim, Yong-Soo Seo, Sung Ook Hwang, Sang-Hee Yoon, Yong Beom Kim, Wen-Chi Chou
    PLOS ONE.2021; 16(4): e0250723.     CrossRef
  • Regional Differences in Dietary Total Fat and Saturated Fatty Acid Intake and Their Associations with Metabolic Diseases among Korean Adults: Using the 2016~2019 Korea National Health and Nutrition Examination Surveys
    SuJin Song, Jae Eun Shim
    Korean Journal of Community Nutrition.2021; 26(6): 495.     CrossRef
  • Regional disparities in the associations of cardiometabolic risk factors and healthy dietary factors in Korean adults
    Kyungho Ha, YoonJu Song, Hye-Kyeong Kim
    Nutrition Research and Practice.2020; 14(5): 519.     CrossRef

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