Effect modification by environmental quality index on the short-term association between PM 2.5 and mortality 公开

Wang, Tong (2015)

Permanent URL: https://etd.library.emory.edu/concern/etds/h989r3998?locale=zh
Published

Abstract

Here we used the data obtained from US Environmental Protection Agency to examine association between PM2.5 and total non-accidental death risk and to evaluate the heterogeneity in PM2.5 mortality rate across different counties. We also evaluated whether county-level environmental quality index modifies the association between PM2.5 and total non-accidental death risk. This study included data of 433 US counties. Bayesian meta-regression was used to combine relative risks from 433 US counties from a national multisite time-series analysis. Among the five environment quality indexes to represent different domains (air, built environment, land, water, sociodemographic) considered, air quality and built environment were found to be significant effect modifiers on PM 2.5 health risks. The effect modification were robust after adjustment by other environmental quality indexes.

Table of Contents

Chapter I. 1

Introduction. 1

Chapter II. 11

Literature Review. 11

Chapter III. 12

Methods. 12

Chapter IV. 15

Results. 15

Chapter V. 17

Discussion. 17

Reference. 18

Appendix. 20

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