Spatiotemporal analysis of particulate air pollution and ischemic heart disease mortality in Beijing, China

Environmental Health

Research

Yuming Guo¹  Yajuan Zhang²  Meimei Xu³  Fengchao Liang³  Xiaochuan Pan³  Yunzheng Mo³  Dane Westerdahl⁴ 

[1] Department of Epidemiology and Biostatistics, School of Population Health, the University of Queensland, Brisbane, Australia;Department of Occupational and Environmental Health, School of Public Health, Ningxia Medical University, Yinchuan, China;Department of Occupational and Environmental Health, School of Public Health, Peking University, Beijing, China;Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA;

关键词: Spatiotemporal analysis;    Ischemic heart disease;    Particulate matter;    Ordinary kriging;    Generalized additive mixed model;   

DOI  :  10.1186/1476-069X-13-109

 received in 2014-09-05, accepted in 2014-12-03,  发布年份 2014

来源: Springer

【 摘 要 】

BackgroundFew studies have used spatially resolved ambient particulate matter with an aerodynamic diameter of <10 μm (PM10) to examine the impact of PM10 on ischemic heart disease (IHD) mortality in China. The aim of our study is to evaluate the short-term effects of PM10 concentrations on IHD mortality by means of spatiotemporal analysis approach.MethodsWe collected daily data on air pollution, weather conditions and IHD mortality in Beijing, China during 2008 and 2009. Ordinary kriging (OK) was used to interpolate daily PM10 concentrations at the centroid of 287 township-level areas based on 27 monitoring sites covering the whole city. A generalized additive mixed model was used to estimate quantitatively the impact of spatially resolved PM10 on the IHD mortality. The co-effects of the seasons, gender and age were studied in a stratified analysis. Generalized additive model was used to evaluate the effects of averaged PM10 concentration as well.ResultsThe averaged spatially resolved PM10 concentration at 287 township-level areas was 120.3 ± 78.1 μg/m3. Ambient PM10 concentration was associated with IHD mortality in spatiotemporal analysis and the strongest effects were identified for the 2-day average. A 10 μg/m3 increase in PM10 was associated with an increase of 0.33% (95% confidence intervals: 0.13%, 0.52%) in daily IHD mortality. The effect estimates using spatially resolved PM10 were larger than that using averaged PM10. The seasonal stratification analysis showed that PM10 had the statistically stronger effects on IHD mortality in summer than that in the other seasons. Males and older people demonstrated the larger response to PM10 exposure.ConclusionsOur results suggest that short-term exposure to particulate air pollution is associated with increased IHD mortality. Spatial variation should be considered for assessing the impacts of particulate air pollution on mortality.

【 授权许可】

Unknown   
© Xu et al.; licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.