气候变化领域集成服务门户(CCPortal): Impact of acute exposure to ambient PM2.5 on non-trauma all-cause mortality in the megacity Delhi

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DOI	10.1016/j.atmosenv.2021.118548
	Impact of acute exposure to ambient PM2.5 on non-trauma all-cause mortality in the megacity Delhi
	Joshi P.; Ghosh S.; Dey S.; Dixit K.; Choudhary R.K.; Salve H.R.; Balakrishnan K.
发表日期	2021
ISSN	1352-2310
卷号	259
英文摘要	Exposure to ambient fine particulate matter (PM2.5) is the largest environmental health risk in India. All previous studies in India focused on PM10 exposure for acute impact assessment; even the single study examining the PM2.5 acute exposure impact used data from a single site. Here we estimated the impact of acute PM2.5 exposure on non-trauma all-cause mortality in the megacity Delhi using a quasi-Poisson regression model and satellite-derived high-resolution (1-km) exposure data. Our satellite-PM2.5 dataset was calibrated and validated against coincident measurements from ground-based reference-grade monitors. This allowed us to minimize exposure misclassification, which otherwise would have happened due to reliance on limited ground-based monitoring sites with a large spatial gap. The annual average (median) PM2.5 exposure (with interquartile range) during this period was 108.5 (63.5–133.6) μg/m³. We found a 0.52% (95% confidence interval, CI: 0.42–0.62%) increase in non-trauma all-cause mortality for every 10 μg/m³ increase in 6-days cumulative PM2.5 exposure with a relatively higher impact on men (0.57%, 95% CI: 0.46–0.69%) than on women (0.52%, 0.38–0.65%). The impact of PM2.5 was almost two-fold higher in winter (0.55%, 0.45–0.66%) per 10 μg/m³ increase in PM2.5 than in summer (0.29%, 0.14–0.45%). The district-level aggregated 6-days cumulative PM2.5 exposure had the largest impact on mortality (1.10%, 0.84–1.35%). The impact of acute exposure to PM2.5 on all-cause mortality was larger than that of PM10 exposure (from previous studies). Our study adds to the global evidence pool, fills the critical gap of evidence of acute PM2.5 exposure impact on mortality in India, and most importantly, demonstrates the significance of disaggregated exposure assessment using satellite data to reduce exposure misclassification in health impact studies, particularly in data-poor regions. Main finding: We estimate a 0.52% increase in all-cause mortality for every 10 μg/m³ rise in short-term PM2.5 exposure with a two-fold higher impact in the winter than in the summer and a higher impact on male (0.57%) than on female (0.52%) in the megacity Delhi. © 2021 Elsevier Ltd
关键词	Exposure Mortality PM2.5 Spatial disaggregation Time series analysis
语种	英语
scopus关键词	Health risks; Regression analysis; Satellites; Ambients; Exposure; Exposure misclassification; High impact; Megacities; Mortality; PM$-10$; PM$-2.5$; Spatial disaggregation; Time-series analysis; Time series analysis; health impact; health risk; maternal mortality; megacity; mortality; particulate matter; seasonal variation; spatiotemporal analysis; adult; all cause mortality; article; controlled study; female; human; India; male; PM10 exposure; PM2.5 exposure; summer; time series analysis; winter; Delhi; India; Varanidae
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248358
作者单位	Centre for Atmospheric Sciences, Indian Institute of Technology, Delhi, India; Department of Biostatistics, St Johns Medical College, Bangalore, India; Centre of Excellence for Research on Clean Air (CERCA), Indian Institute of Technology, Delhi, India; School of Public Policy, Indian Institute of Technology, Delhi, India; Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India; Department of Environmental Health Engineering, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
推荐引用方式 GB/T 7714	Joshi P.,Ghosh S.,Dey S.,et al. Impact of acute exposure to ambient PM2.5 on non-trauma all-cause mortality in the megacity Delhi[J],2021,259.
APA	Joshi P..,Ghosh S..,Dey S..,Dixit K..,Choudhary R.K..,...&Balakrishnan K..(2021).Impact of acute exposure to ambient PM2.5 on non-trauma all-cause mortality in the megacity Delhi.ATMOSPHERIC ENVIRONMENT,259.
MLA	Joshi P.,et al."Impact of acute exposure to ambient PM2.5 on non-trauma all-cause mortality in the megacity Delhi".ATMOSPHERIC ENVIRONMENT 259(2021).