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Suicide rates across income levels: Retrospective cohort data on 1 million participants collected between 2003 and 2013 in South Korea

Title
Suicide rates across income levels: Retrospective cohort data on 1 million participants collected between 2003 and 2013 in South Korea
Author
노성원
Keywords
Suicide rate; Income; Socioeconomic position
Issue Date
2017-06
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF EPIDEMIOLOGY, v. 27, no. 6, page. 258-264
Abstract
Background: The relation of income and socioeconomic status with suicide rates remains unclear. Most previous studies have focused on the relationship between suicide rates and macroeconomic factors (e.g., economic growth rate). Therefore, we aimed to identify the relationship between individuals' socioeconomic position and suicide risk.Methods: We analyzed suicide mortality rates across socioeconomic positions to identify potential trends using observational data on suicide mortality collected between January 2003 and December 2013 from 1,025,340 national health insurance enrollees. We followed the subjects for 123.5 months on average. Socioeconomic position was estimated using insurance premium levels. To examine the hazard ratios of suicide mortality in various socioeconomic positions, we used Cox proportional hazard models.Results: We found that the hazard ratios of suicide showed an increasing trend as socioeconomic position decreased. After adjusting for gender, age, geographic location, and disability level, Medicaid recipients had the highest suicide hazard ratio (2.28; 95% CI, 1.87-2.77). Among the Medicaid recipients, men had higher hazard ratios than women (2.79; 95% CI, 2.17-3.59 vs. 1.71; 95% CI, 1.25-2.34). Hazard ratios also varied across age groups. The highest hazard ratio was found in the 40-59-year-old group (3.19; 95% CI, 2.31-4.43), whereas the lowest ratio was found in those 60 years and older (1.44; 95% CI, 1.09-1.87).Conclusions: Our results illuminate the relationship between socioeconomic position and suicide rates and can be used to design and implement future policies on suicide prevention. (C) 2017 The Authors. Publishing services by Elsevier B.V. on behalf of The Japan Epidemiological Association.
URI
https://www.sciencedirect.com/science/article/pii/S0917504017300382?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/114673
ISSN
0917-5040
DOI
10.1016/j.je.2016.06.008
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COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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