The Effects of Fine Particulate Air Pollution on Daily Mortality: A Case-Crossover Study in a Subtropical City, Taipei, Taiwan

International Journal of Environmental Research and Public Health

Shang-Shyue Tsai²  Chih-Ching Chang¹  Saou-Hsing Liou³ 

[1] Department of Environmental and Occupational Health, National Cheng Kung University, Tainan 701, Taiwan; E-Mail:;Department of Healthcare Administration, I-Shou University, Kaohsiung 824, Taiwan; E-Mail:;Division of Environmental Health and Occupational Medicine, National Health Research Institute, Miaoli 350, Taiwan; E-Mail:

关键词: fine particulate;    air pollution;    daily mortality;    case-crossover;   

DOI  :  10.3390/ijerph110505081

来源: mdpi

【 摘 要 】

This study was undertaken to determine whether there was an association between PM_2.5 levels and daily mortality in Taipei, Taiwan, the largest metropolitan city with a subtropical climate. Daily mortality, air pollution, and weather data for Taipei were obtained for the period from 2006–2008. The relative risk of daily mortality was estimated using a time-stratified case-crossover approach, controlling for weather variables, day of the week, seasonality, and long-term time trends. For the single pollutant model, PM_2.5 showed association with total mortality both on warm (>23 °C) and cool days (<23 °C). There is no indication of an association between PM_2.5 and risk of death due to respiratory diseases both on warm and cool days. PM_2.5 had effects on the risk of death from cardiovascular diseases only on cool days. In the two-pollutant models, PM_2.5 remained effects on the risk of mortality for all cause and cardiovascular disease after the inclusion of SO₂ and O₃ both on warm and cool days. This study provides evidence that short-term exposure to PM_2.5 increased the risk of death for all cause and cardiovascular disease.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.