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The relative importance of macro versus micro geographical scale in explaining suicide variation in Seoul, South Korea 2014–2016

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  • Hwa-Young Lee
  • Rockli Kim
  • Soong-Nang Jang
  • Ichiro Kawachi

Abstract

Background: As ecological factors are getting attention as important determinants of suicide, it is important to identify the unit at which the largest variation exists for more tailed strategy to prevent suicide. We examined the relative importance of two administrative levels for geographic variation in the suicide rate between 2014–2016 in Seoul, the capital city of Korea. Methods: Two-level linear regression with Dongs (level 1) nested within Gus (level 2) was performed based on suicide death data aggregated at the Dong-level. We performed pooled analyses and then year-stratified analyses. Dong-level socioeconomic status and environmental characteristics were included as control variables. Results: The overall age- and sex- standardized suicide rate across all Dongs decreased over time from 24.9 deaths per 100,000 in 2014 to 23.7 deaths in 2016. When Dong and Gu units were simultaneously considered in a multilevel analysis, most of the variation in suicide rate was attributed to within-Gu, between-Dong differences with a contribution of Gu-level being small and decreasing over time in year (Variance partitioning coefficient of Gu = 5.3% in 2014,

Suggested Citation

  • Hwa-Young Lee & Rockli Kim & Soong-Nang Jang & Ichiro Kawachi, 2022. "The relative importance of macro versus micro geographical scale in explaining suicide variation in Seoul, South Korea 2014–2016," PLOS ONE, Public Library of Science, vol. 17(9), pages 1-12, September.
    • Handle: RePEc:plo:pone00:0273866
    DOI: 10.1371/journal.pone.0273866
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