Cited by 425Air Quality and Health ImpactsClimate Change and Health ImpactsIndoor Air Quality and Microbial Exposure

Fine particulate air pollution and mortality in nine California counties: results from CALFINE

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Ostro, Bart, Broadwin, Rachel, Green, Shelley, Feng, Wen-Ying, Lipsett, Michael·2006·Environmental Health Perspectives

Abstract

Many epidemiologic studies provide evidence of an association between daily counts of mortality and ambient particulate matter<10 microm in diameter (PM10). Relatively few studies, however, have investigated the relationship of mortality with fine particles [PM<2.5 microm in diameter (PM2.5)], especially in a multicity setting. We examined associations between PM2.5 and daily mortality in nine heavily populated California counties using data from 1999 through 2002. We considered daily counts of all-cause mortality and several cause-specific subcategories (respiratory, cardiovascular, ischemic heart disease, and diabetes). We also examined these associations among several subpopulations, including the elderly (>65 years of age), males, females, non-high school graduates, whites, and Hispanics. We used Poisson multiple regression models incorporating natural or penalized splines to control for covariates that could affect daily counts of mortality, including time, seasonality, temperature, humidity, and day of the week. We used meta-analyses using random-effects models to pool the observations in all nine counties. The analysis revealed associations of PM2.5 levels with several mortality categories. Specifically, a 10-microg/m3 change in 2-day average PM2.5 concentration corresponded to a 0.6% (95% confidence interval, 0.2-1.0%) increase in all-cause mortality, with similar or greater effect estimates for several other subpopulations and mortality subcategories, including respiratory disease, cardiovascular disease, diabetes, age>65 years, females, deaths out of the hospital, and non-high school graduates. Results were generally insensitive to model specification and the type of spline model used. This analysis adds to the growing body of evidence linking PM2.5 with daily mortality.

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Authors
Ostro, B., Broadwin, R., Green, S., Feng, W.-Y., & Lipsett, M.
Affiliations
  • University of California, Davis (US)
  • California Office of Environmental Health Hazard Assessment, Oakland, California, USA
  • University of California, San Francisco (US)
Venue
Environmental Health Perspectives
Published
2005-09-01
Volume
114
Issue
1
Pages
29-33
ISSN
  • 0091-6765 (ISSN-L)
  • 1552-9924
OpenAlex
W2058611314
Cited by
425
References
23
Citations by year
2026: 8 · 2025: 6 · 2024: 9 · 2023: 24 · 2022: 15 · 2021: 14 · 2020: 16 · 2019: 28 · 2018: 23 · 2017: 21 · 2016: 13 · 2015: 21 · 2014: 46 · 2013: 31 · 2012: 25
FWCI
10.91
Type
journal article
Language
en
Open access
Locations
  • Environmental Health Perspectives (publishedVersion, public-domain)
  • Europe PMC (PubMed Central) (publishedVersion, public-domain)
  • PubMed Central (publishedVersion, public-domain)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Climate Change and Health Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
Keywords
PM2.5, air pollution, mortality, all-cause mortality, respiratory mortality, cardiovascular mortality, ischemic heart disease, diabetes mortality, subpopulation differences, California counties
MeSH terms
Air Pollutants, Air Pollution, California, Cause of Death, Dust, Environmental Monitoring, Female, Humans, Humidity, Male, Mortality, Particle Size, Temperature, Models, Statistical, Epidemiological Monitoring

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