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Spatial analysis of $PM_{10}$ and cardiovascular mortality in the Seoul metropolitan area

  • Lim, Yu-Ra (Korea Environment Institute) ;
  • Bae, Hyun-Joo (Korea Environment Institute) ;
  • Lim, Youn-Hee (Institute of Health and Environment, Seoul National University) ;
  • Yu, Seungdo (Environmental Health Research Department, National Institute of Environmental Research) ;
  • Kim, Geun-Bae (Environmental Health Research Department, National Institute of Environmental Research) ;
  • Cho, Yong-Sung (Environmental Health Research Department, National Institute of Environmental Research)
  • 투고 : 2013.07.13
  • 심사 : 2014.05.29
  • 발행 : 2014.01.01

초록

Objectives Numerous studies have revealed the adverse health effects of acute and chronic exposure to particulate matter less than $10{\mu}m$ in aerodynamic diameter ($PM_{10}$). The aim of the present study was to examine the spatial distribution of $PM_{10}$ concentrations and cardiovascular mortality and to investigate the spatial correlation between $PM_{10}$ and cardiovascular mortality using spatial scan statistic (SaTScan) and a regression model. Methods From 2008 to 2010, the spatial distribution of $PM_{10}$ in the Seoul metropolitan area was examined via kriging. In addition, a group of cardiovascular mortality cases was analyzed using SaTScan-based cluster exploration. Geographically weighted regression (GWR) was applied to investigate the correlation between $PM_{10}$ concentrations and cardiovascular mortality. Results An examination of the regional distribution of the cardiovascular mortality was higher in provincial districts (gu) belonging to Incheon and the northern part of Gyeonggi-do than in other regions. In a comparison of $PM_{10}$ concentrations and mortality cluster (MC) regions, all those belonging to MC 1 and MC 2 were found to belong to particulate matter (PM) 1 and PM 2 with high concentrations of air pollutants. In addition, the GWR showed that $PM_{10}$ has a statistically significant relation to cardiovascular mortality. Conclusions To investigate the relation between air pollution and health impact, spatial analyses can be utilized based on kriging, cluster exploration, and GWR for a more systematic and quantitative analysis. It has been proven that cardiovascular mortality is spatially related to the concentration of $PM_{10}$.

키워드

참고문헌

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