The Association between Reduction in PM2.5 and Improvement in Cardiovascular Mortality Rates Public Deposited

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  • March 20, 2019
  • Corrigan, Anne
    • Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
  • We examined the association between county-level change in PM2.5 and change in cardiovascular mortality rate before and after implementation of the 1997 annual PM2.5 National Ambient Air Quality Standards. We examined how the association varied between counties stratified by attainment designation and by design values used in the designation process to characterize air quality. We used linear regression and difference-in-difference models, adjusted for sociodemographic confounders. Across 619 counties in the study, there were 1.10 (95% CI 0.37, 1.82) fewer deaths per year per 100,000 people per 1 µg/m3 PM2.5 decrease. Improvements in air quality and morality rates were greater in nonattainment counties and in the counties with the highest design values, while attainment counties and those with the lowest design values had greater decrease in mortality rate per unit decrease in PM2.5; however, the differences between estimates changes in mortality rates were not statistically significant.
Date of publication
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  • In Copyright
  • Serre, Marc
  • Rappold, Ana
  • West, J. Jason
  • Master of Science
Degree granting institution
  • University of North Carolina at Chapel Hill Graduate School
Graduation year
  • 2017

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