Lim Yu-Ra, Bae Hyun-Joo, Lim Youn-Hee, Yu Seungdo, Kim Geun-Bae, Cho Yong-Sung
Korea Environment Institute, Seoul, Korea.
Institute of Health and Environment, Seoul National University, Seoul, Korea.
Environ Health Toxicol. 2014 Jul 31;29:e2014005. doi: 10.5620/eht.2014.29.e2014005.
Numerous studies have revealed the adverse health effects of acute and chronic exposure to particulate matter less than 10 μm in aerodynamic diameter (PM10). The aim of the present study was to examine the spatial distribution of PM10 concentrations and cardiovascular mortality and to investigate the spatial correlation between PM10 and cardiovascular mortality using spatial scan statistic (SaTScan) and a regression model.
From 2008 to 2010, the spatial distribution of PM10 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 PM10 concentrations and cardiovascular mortality.
An examination of the regional distribution of the cardiovascular mortality was higher in provincial districts (gu) belonging to Incheon and the northern part of Gyeonggido than in other regions. In a comparison of PM10 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 PM10 has a statistically significant relation to cardiovascular mortality.
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 PM10.
大量研究揭示了急性和慢性暴露于空气动力学直径小于10μm的颗粒物（PM10）对健康的不利影响。本研究的目的是检查PM10浓度和心血管死亡率的空间分布，并使用空间扫描统计量（SaTScan）和回归模型研究PM10与心血管死亡率之间的空间相关性。
2008年至2010年，通过克里金法研究首尔大都市区PM10的空间分布。此外，使用基于SaTScan的聚类探索分析一组心血管死亡病例。应用地理加权回归（GWR）研究PM10浓度与心血管死亡率之间的相关性。
仁川市和京畿道北部所属行政区（gu）的心血管死亡率区域分布高于其他地区。在比较PM10浓度和死亡聚类（MC）区域时，发现属于MC 1和MC 2的所有区域都属于空气污染物浓度高的颗粒物（PM）1和PM 2。此外，GWR显示PM10与心血管死亡率存在统计学上的显著关系。
为了研究空气污染与健康影响之间的关系，可以利用基于克里金法、聚类探索和GWR的空间分析进行更系统和定量的分析。已证明心血管死亡率在空间上与PM10浓度相关。
