Estimated acute effects of ambient ozone and nitrogen dioxide on mortality in the Pearl River Delta of southern China.

ABSTRACT:

Background and objectives

Epidemiologic studies have attributed adverse health effects to air pollution; however, controversy remains regarding the relationship between ambient oxidants [ozone (O₃) and nitrogen dioxide (NO₂)] and mortality, especially in Asia. We conducted a four-city time-series study to investigate acute effects of O₃ and NO₂ in the Pearl River Delta (PRD) of southern China, using data from 2006 through 2008.

Methods

We used generalized linear models with Poisson regression incorporating natural spline functions to analyze acute mortality in association with O₃ and NO₂, with PM₁₀ (particulate matter ≤ 10 μm in diameter) included as a major confounder. Effect estimates were determined for individual cities and for the four cities as a whole. We stratified t

SUBMITTER: Tao Y 

PROVIDER: S-EPMC3295344 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature