Long-term Exposure to PM2.5 and Mortality for the Older Population: Effect Modification by Residential Greenness.

ABSTRACT:

Background

Although many studies demonstrated reduced mortality risk with higher greenness, few studies examined the modifying effect of greenness on air pollution-health associations. We evaluated residential greenness as an effect modifier of the association between long-term exposure to fine particles (PM2.5) and mortality.

Methods

We used data from all Medicare beneficiaries in North Carolina (NC) and Michigan (MI) (2001-2016). We estimated annual PM2.5 averages using ensemble prediction models. We estimated mortality risk per 1 μg/m3 increase using Cox proportional hazards modeling, controlling for demographics, Medicaid eligibility, and area-level covariates. We investigated health disparities by greenness using the Normalized Difference Vegetation Index with measures

SUBMITTER: Son JY 

PROVIDER: S-EPMC8159868 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature