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. 2020 Oct 12;10(1):16979.
doi: 10.1038/s41598-020-74119-4.

Increased prevalence of depression in South Korea from 2002 to 2013

Ga Eun Kim  1 , Min-Woo Jo  2 , Yong-Wook Shin  3
Affiliations

Increased prevalence of depression in South Korea from 2002 to 2013

Ga Eun Kim et al. Sci Rep. .

Abstract

South Korea has one of the highest suicide rates among countries. However, the prevalence of depression in South Korea has been reported to be much lower than in other countries. The current study aims to estimate the prevalence of major depressive disorder using a large representative sample of the South Korean population. The prevalence of depression in a sampled population of one million individuals increased from 2.8% in 2002 to 5.3% in 2013; it was found to increase with the age of the population, and was higher in females than in males for most age groups. A Cox's proportional hazard model showed that suicide risk was significantly higher in people with depression (hazard ratio [HR] 3.79, 95% CI 3.14-4.58) than those without depression. It was also significantly higher in older people (HR 1.52, 95% CI 1.36-1.70) than in younger people, and in males (HR 2.45, 95% CI 2.02-2.96) than in females. Furthermore, higher income groups were at lower suicide risk as compared to lower income groups (HR 0.88, 95% CI 0.80-0.95). This study using the large representative sample data provided evidence that increased prevalence of depression contributed to the increased risk of suicide in South Korea during the recent decade.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Age- and sex-standardized prevalence and incidence of depressive disorder in South Korea.
Figure 2
Figure 2
Prevalence of depression based on sex and age in 2002 and 2013.
Figure 3
Figure 3
Cumulative incidence of suicide in the population with or without depressive disorder.
Figure 4
Figure 4
Forest plot of multivariate Cox regression analysis of effect of depression and epidemiological factors on suicide. The number of deaths from suicide according to each factor is listed in Supplementary Table 1.
See this image and copyright information in PMC

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