Epidemiology and Health

COVID-19: Cohort Profile

Cohort profile: Cardiovascular Metabolic Etiological Research Center COVID-19 Mental Health Survey (CC-MHS): Sun Jae Jung, Dongkyu Lee, Ji Su Yang, Sunghyuk Kang, Hyejin Kim, Jeong Hyun Ahn, Yunseong Heo, Jieun Noh, Changhyun Kim, Hyeon Chang Kim; Epidemiol Health. 2025;47:e2025033. Published online June 30, 2025; DOI: https://doi.org/10.4178/epih.e2025033

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Abstract Summary PDF: Abstract
The Cardiovascular Metabolic Etiological Research Center COVID-19 Mental Health Survey (CC-MHS) is a comprehensive longitudinal cohort study investigating the mental health impact of the coronavirus disease 2019 pandemic by utilizing pre-existing baseline data from the Cardiovascular Metabolic Etiological Research Center cohort (2013-2018). This study assesses physical health, lifestyle changes, and mental health using validated tools, including the Patient Health Questionnaire-9, Generalized Anxiety Disorder-7, and the PTSD Checklist for DSM-5, and evaluates a population of urban and suburban Korean participants across multiple dimensions. Through online surveys, the research identified gender-specific social support mechanisms, showing that men benefit from larger social networks, whereas women derive protective effects from stronger emotional connections. Key findings underscore complex interactions among demographic factors, psychological variables, and public health responses, especially in the context of vaccination attitudes and trust in pandemic management. The CC-MHS delivers critical insights into mental health trajectories during global health crises, offering valuable evidence for developing adaptive public health strategies and for understanding the intricate relationships between individual psychological resilience and broader societal health challenges.; Summary

Korean summary
본 CC-MHS 코호트는 팬데믹 이전 4,060명 대상 CMERC 기초자료 활용하였다 본 CC-MHS 코호트는 우울, 불안, PTSD 등 정신건강 평가를 7차례 추적조사하였다. 본 코호트에서는 성별 보호요인과 사회적 지지·신뢰의 중요성 규명하였다.

Key Message
In CC-MHS, we utilized pre-pandemic baseline data from 4,060 adults in the CMERC cohort. We conducted 7 waves of mental health surveys assessing depression, anxiety, PTSD, and resilience. In this cohort, we identified gender-specific protective factors and emphasized the importance of social support and trust.

Original Article

Gender differences in the association between multimorbidity and depression in older Korean adults: an analysis of data from the National Survey of Older Koreans (2011-2017): SeoYeon Hwang, Jin Young Nam, Jeong Hyun Ahn, Soojin Park; Epidemiol Health. 2022;44:e2022049. Published online May 24, 2022; DOI: https://doi.org/10.4178/epih.e2022049

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Previous studies have shown that people with multimorbidity have a higher risk of depression than those without multimorbidity. However, few studies have examined the association between depression and multimorbidity in men and women separately. Since the rates of depression and multimorbidity are different in men and women, it is necessary to examine whether gender differences affect their association.

METHODS

This study included 30,138 participants (aged ≥ 65 years) from the National Survey of Older Koreans (2011-2017). Depression was defined using the Korean version of the Geriatric Depression Scale (SGDS-K). Multimorbidity was defined as people who had 2 or more chronic diseases, including arthritis, diabetes, heart disease, hypertension, pulmonary disease, cancer, stroke, or osteoporosis. Multiple logistic regression analysis was performed to determine the association between depression and multimorbidity.

RESULTS

In total, 22.2% and 30.7% of men and women, respectively, had depression. Those with multimorbidity had a higher risk of depression than those without chronic conditions; specifically, the difference in risk among men was greater than that among women. Age was considered a moderator for women. While the effects of pulmonary disease, stroke, and cancer were especially substantial in the integrated analysis, gender differences were observed related to various chronic conditions comorbid with heart disease.

CONCLUSIONS

There are gender differences in the association between multimorbidity and depression among older Korean adults. Therefore, gender-specific care should be provided to reduce depression in older adults with multimorbidity.

Summary

Korean summary
복합만성질환을 가진 남성 노인이 복합만성질환을 가진 여성 노인보다 우울증을 경험할 위험이 높았다. 특히 심장질환을 가진 남성 노인과 여성 노인은 심장질환을 포함한 만성질환의 개수에 따라 우울증 위험에 차이가 있었다. 노인들의 수명 향상을 위해 성별 차이를 고려한 치료 방안과 정책이 마련되어야 한다.

Key Message
Multimorbidity was associated with a high-risk of depression in older Korean adults and the effects of multimorbidity differed by gender.

Citations

Citations to this article as recorded by

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