Short-term exposure to particulate matter constituents and mortality in a national study of U.S. urban communities.

ABSTRACT:

Background

Although the association between PM2.5 mass and mortality has been extensively studied, few national-level analyses have estimated mortality effects of PM2.5 chemical constituents. Epidemiologic studies have reported that estimated effects of PM2.5 on mortality vary spatially and seasonally. We hypothesized that associations between PM2.5 constituents and mortality would not vary spatially or seasonally if variation in chemical composition contributes to variation in estimated PM2.5 mortality effects.

Objectives

We aimed to provide the first national, season-specific, and region-specific associations between mortality and PM2.5 constituents.

Methods

We estimated short-term associations between nonaccidental mortality and PM2.5 constituents across 72 urban U

SUBMITTER: Krall JR 

PROVIDER: S-EPMC3801200 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature