Cited by 142Air Quality and Health ImpactsIndoor Air Quality and Microbial ExposureAtmospheric chemistry and aerosols

Coarse and fine particles and daily mortality in the Coachella Valley, California: a follow-up study

OSTRO, BART D, BROADWIN, RACHEL, LIPSETT, MICHAEL J·2000·Journal of Exposure Science & Environmental Epidemiology

Abstract

Many epidemiological studies provide evidence of an association between ambient particles, measured as PM10, and daily mortality. Most of these studies have been conducted in urban areas where PM10 is highly correlated with and dominated by fine particles less than 2.5 microm in diameter (PM2.5). Fewer studies have investigated impacts associated with the fraction of coarse mode particles (between 2.5 and 10 microm in diameter). In a previous study using data from 1989 through 1992 in the Coachella Valley, a desert resort and retirement area east of Los Angeles, we reported associations between PM10 and several different measures of mortality [Ostro B.D., Hurley S., and Lipsett M.J. Air pollution and daily mortality in the Coachella Valley, California: a study of PM10 dominated by coarse particles. Environ. Res. 1999: 81: 231-238]. In this arid environment, coarse particles of geologic origin are highly correlated with and comprise approximately 60% of PM10, increasing to >90% during wind events. This study was intended to repeat the earlier investigation using 10 years (1989-1998) of daily data on mortality and PM10. The last 2.5 years of data also included daily measures of PM2.5, allowing examination of size-specific impacts. To ensure adequate statistical power, we attempted to develop predictive models for both fine and coarse particles to use in analyses of the full 10-year period. An acceptable fit was found only for coarse particles, which were found to be a cubic function of PM10 (R2 = 0.95). Outcome variables included several measures of daily mortality, including all-cause (minus accidents and homicides), cardiovascular and respiratory mortality. Multivariate Poisson regression analyses using generalized additive models were employed to explain the variation in these endpoints, controlling for temperature, humidity, day of the week, season, and time, using locally weighted smoothing techniques. Pollution lags of up to 4 days were examined. Several pollutants were associated with all-cause mortality, including PM2.5, carbon monoxide and nitrogen dioxide. More consistent results were found for cardiovascular-specific mortality, for which associations were found for coarse particles (RR = 1.02; 95% C.I., 1.01-1.04), PM10 (RR = 1.03; 95% C.I., 1.01-1.05). None of the pollutants was associated with respiratory-specific mortality. Ozone was not associated with any of the mortality outcomes. These findings are generally consistent with those we previously reported for the Coachella Valley for the period 1989-1992, demonstrating associations between several measures of particulate matter and daily mortality in an environment in which particulate concentrations are dominated by the coarse fraction.

Integrity signals

Registry

Crossref · 10.1038/sj.jea.7500094

Cites

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cited by

Sorted by citations

Authors
OSTRO, B. D., BROADWIN, R., & LIPSETT, M. J.
Affiliations
University of California, San Francisco (US)
Corresponding author
OSTRO, BART D
Venue
Journal of Exposure Science & Environmental Epidemiology
Published
2000-10-01
Volume
10
Issue
5
Pages
412-419
ISSN
  • 1559-0631 (ISSN-L)
  • 1559-064X
OpenAlex
W1964823917
Cited by
142
References
0
Citations by year
2026: 2 · 2025: 3 · 2024: 1 · 2023: 3 · 2022: 2 · 2021: 3 · 2020: 5 · 2018: 6 · 2017: 3 · 2016: 4 · 2015: 7 · 2014: 5 · 2013: 9 · 2012: 18
FWCI
2.44
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Exposure Science & Environmental Epidemiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
Keywords
air pollution, PM10, coarse particles, PM2.5, fine particles, daily mortality, cardiovascular mortality, respiratory mortality, all-cause mortality, Coachella Valley, desert environment, carbon monoxide, nitrogen dioxide, mortality prediction model, wind events, arid climate, follow-up study
MeSH terms
Air Pollutants, California, Cardiovascular Diseases, Cause of Death, Environmental Exposure, Follow-Up Studies, Humans, Particle Size, Respiratory Tract Diseases, Weather, Linear Models

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review