Background: Specific characteristics of particulate matter (PM) responsible for associations
with respiratory health observed in epidemiological studies are not well established. High …

Background: Numerous epidemiologic studies report associations between outdoor
concentrations of particles and adverse health effects. Because personal exposure to …

Background Exposure to air pollution and, more specifically, particulate matter (PM) is
associated with adverse health effects. However, the specific PM characteristics responsible …

Numerous studies have reported weak but statistically significant acute health effects of
particulate air pollution. The associations are observed at levels below the current US …

Particulate matter (PM) is a key indicator of air pollution and a significant risk factor for
adverse health outcomes in humans. PM is not a self-contained pollutant but a mixture of …

Results of recent research show that particulate matter (PM) composition and size vary
widely with both space and time. Despite the variability in PM characteristics, which are …

While numerous studies have demonstrated that shortterm exposure to particulate matter
(PM*) is associated with adverse health effects, the characteristics of PM that cause harm …

Air pollution has been considered a hazard to human health. In the past decades, many
studies highlighted the role of ambient airborne particulate matter (PM) as an important …

Results from epidemiology studies have shown statistical associations between ambient air
particulate matter (PM) concentrations and mortality/morbidity, particularly among …

There is an absence of studies that define the relationship between ambient particulate
matter (PM) levels and adverse health outcomes among the young and healthy adult sub …