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タイトル: Associations between fine particulate matter components and daily mortality in Nagoya, Japan
著者: Ueda, Kayo  kyouindb  KAKEN_id
Yamagami, Makiko
Ikemori, Fumikazu
Hisatsune, Kunihiro
Nitta, Hiroshi
著者名の別形: 上田, 佳代
キーワード: particulate matter
chemical components
mortality
air pollution
発行日: 2016
出版者: Japan Epidemiology Association
誌名: Journal of Epidemiology
巻: 26
号: 5
開始ページ: 249
終了ページ: 257
抄録: Background: Seasonal variation and regional heterogeneity have been observed in the estimated effect of fine particulate matter (PM2.5) mass on mortality. Differences in the chemical compositions of PM2.5 may cause this variation. We investigated the association of the daily concentration of PM2.5 components with mortality in Nagoya, Japan. Methods: We combined daily mortality counts for all residents aged 65 years and older with concentration data for PM2.5 mass and components in Nagoya from April 2003 to December 2007. A time-stratified case-crossover design was used to examine the association of daily mortality with PM2.5 mass and each component (chloride, nitrate, sulfate, sodium, potassium, calcium, magnesium, ammonium, elemental carbon [EC], and organic carbon [OC]). Results: We found a stronger association between mortality and PM2.5 mass in transitional seasons. In analysis for each PM2.5 component, sulfate, nitrate, chloride, ammonium, potassium, EC, and OC were significantly associated with mortality in a single-pollutant model. In a multi-pollutant model, an interquartile range increase in the concentration of sulfate was marginally associated with an increase in all-cause mortality of 2.1% (95% confidence interval, -0.1 to 4.4). Conclusions: These findings suggest that some specific PM components have a more hazardous effect than others and contribute to seasonal variation in the health effects of PM2.5.
著作権等: © 2015 Kayo Ueda et al. This is an open access article distributed under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
URI: http://hdl.handle.net/2433/218963
DOI(出版社版): 10.2188/jea.JE20150039
PubMed ID: 26686882
出現コレクション:学術雑誌掲載論文等

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