Background Interest in the health effects of particulate matter (PM) has focused on
identifying sources of PM, including biomass burning, power plants, and gasoline and diesel …

Background Recent time-series studies have indicated that both cardiovascular disease
(CVD) mortality and hospitalizations are associated with particulate matter (PM). However …

Time series models relating short-term changes in air pollution levels to daily mortality
counts typically assume that the effects of air pollution on the log relative rate of mortality do …

Background: Epidemiologic studies have reported associations between fine particles
(aerodynamic diameter≤ 2.5 µm; PM2. 5) and mortality. However, concerns have been …

Indices of atmospheric particulate matter (PM) have been reported to be associated with
daily mortality and morbidity in a large number of recent time-series studies. However, the …

Background: Time-series studies have shown short-term temporal associations between low
levels of ambient particulate air pollution and adverse health effects. It is not known whether …

While time-series studies have consistently provided evidence for an effect of particulate air
pollution on mortality, uncertainty remains as to the extent of the life-shortening implied by …

It has been hypothesized that the composition of particulate matter (PM) may be a better
predictor of health effects than PM mass alone. The regional differences in PM composition …

Background Although the association between exposure to particulate matter and health is
well established, there remains uncertainty as to whether certain chemical components are …

Background Recent studies have reported associations between particulate air pollution
and daily mortality rates. Population-based, cross-sectional studies of metropolitan areas in …