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Citation
Tags
HERO ID
6671796
Reference Type
Journal Article
Title
Estimating causal effects of particulate matter regulation on mortality
Author(s)
Sanders, NJ; Barreca, AI; Neidell, MJ
Year
2020
Is Peer Reviewed?
Yes
Journal
Epidemiology
ISSN:
1044-3983
EISSN:
1531-5487
Volume
31
Issue
2
Page Numbers
160-167
Language
English
PMID
31834013
DOI
10.1097/EDE.0000000000001153
Abstract
BACKGROUND:
Estimating the causal effect of pollution on human health is integral for evaluating returns to pollution regulation, yet separating out confounding factors remains a perennial challenge.
METHODS:
We use a quasi-experimental design to investigate the causal relationship between regulation of particulate matter smaller than 2.5 micrograms per cubic meter (PM2.5) and mortality among those 65 years of age and older. We exploit regulatory changes in the Clean Air Act Amendments (CAAA). Regulation in 2005 impacted areas of the United States differentially based on pre-regulation air quality levels for PM2.5. We use county-level mortality data, extracted from claims data managed by the Centers for Medicare & Medicaid Services, merged to county-level average PM2.5 readings and attainment status as classified by the Environmental Protection Agency.
RESULTS:
Based on estimates from log-linear difference-in-differences models, our results indicate after the CAAA designation for PM2.5 in 2005, PM2.5 levels decreased 1.59 micrograms per cubic meter (95% CI = 1.39, 1.80) and mortality rates among those 65 and older decreased by 0.93% (95% CI = 0.10%, 1.77%) in nonattainment counties, relative to attainment ones. Results are robust to a series of alternate models, including nearest-neighbor matching based on propensity score estimates.
CONCLUSION:
This analysis suggests large health returns to the 2005 PM2.5 designations, and provides evidence of a causal association between pollution and mortality among the Medicare population.
Tags
NAAQS
•
ISA-PM (2019)
PM RTC
•
ISA – PM Supplement (2022)
Cited References
•
Litsearch – PM ISA Supplement 2021
Pubmed iCite citation search (April 2021 BR)
PM2.5 Cardiovascular and Mortality Epi Search
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References from other sources
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