Associations between Long-Term Exposure to Chemical Constituents of Fine Particulate Matter (PM _2.5 ) and Mortality in Medicare Enrollees in the Eastern United States

Abstract

Long-term exposures to PM2.5 and several constituents were associated with mortality in the elderly population of the eastern United States. Moreover, some constituents increased the association between long-term exposure to PM2.5 and mortality. These results provide new evidence that chemical composition can partly explain the differential toxicity of PM2.5.