Mortality-Air Pollution Associations in Low Exposure Environments (MAPLE): Phase 2.

Abstract

In several large, national Canadian cohorts, including a cohort of 7.1 million unique census respondents, associations were observed between exposure to PM_2.5 with nonaccidental mortality and several specific causes of death. Associations with nonaccidental mortality were observed using the eSCHIF methodology at concentrations as low as 2.5 μg/m³, and there was no clear evidence in the observed data of a lower threshold, below which PM_2.5 was not associated with nonaccidental mortality.