Acute Exposure to Fine and Coarse Particulate Matter and Infant Mortality in Tokyo, Japan (2002-2013).
Acute Exposure to Fine and Coarse Particulate Matter and Infant Mortality in Tokyo, Japan (2002-2013).
复制标题
日本东京急性暴露于细颗粒物和粗颗粒物与婴儿死亡率（2002-2013 年）。
DOI：
10.1016/j.scitotenv.2016.01.211
复制
发表时间：
2016
影响因子：
9.8
通讯作者：
Hiroyuki Doi
中科院分区：
文献类型：
--
作者：
Takashi Yorifuji;Saori Kashima;Hiroyuki Doi
Few studies have evaluated the effect of short-term exposure to particulate matter (PM) less than 2.5 μm in diameter (PM2.5) or to coarse particles on infant mortality. We evaluated the association between short-term exposure to PM and infant mortality in Japan and assessed whether adverse health effects were observable at PM concentrations below Japanese air quality guidelines. We used a time-stratified, case-crossover design. The participants included 2086 infants who died in the 23 urbanized wards of the Tokyo Metropolitan Government between January 2002 and December 2013. We obtained measures of PM2.5and suspended particulate matter (SPM; PM < 7 μm in diameter) from one general monitoring station. As a measure of coarse particles, we calculated PM7–2.5by subtracting PM2.5from SPM. We then used conditional logistic regression to analyze the data. Same-day PM2.5was associated with increased risks of infant and postneonatal mortality, especially for mortality related to respiratory causes. For a 10 μg/m3increase in PM2.5, the odds ratios were 1.06 (95% confidence interval: 1.01–1.12) for infant mortality and 1.10 (1.02–1.19) for postneonatal mortality. PM7–2.5was also associated with an increased risk of postneonatal mortality, independent of PM2.5. Even when PM2.5and SPM concentrations were below Japanese air quality guidelines, we observed adverse health effects. This study provides further evidence that acute exposure to PM2.5and coarse particles (PM7–2.5) is associated with an increased risk of infant mortality. Further, rigorous evaluation of air quality guidelines for daily average PM2.5and larger particles is needed.
