Document Detail

Ozone, suspended particulates, and daily mortality in Mexico City.
MedLine Citation:
PMID:  9012599     Owner:  NLM     Status:  MEDLINE    
To investigate acute, irreversible effects of exposure to ozone and other air pollutants, the authors examined daily death counts in relation to air pollution levels in Mexico City during 1990-1992. When considered singly in Poisson regression models accounting for periodic effects, the rate ratio for total mortality associated with a 100-ppb increment in 1-hour maximum ozone concentration was 1.024 (95% confidence interval (CI) 1.011-1.039). Measures of average ozone concentration were somewhat more strongly related to mortality. The rate ratio was 1.024 (95% CI 0.984-1.062) per 100 ppb for sulfur dioxide and 1.050 (95% CI 1.030-1.067) per 100 micrograms/m3 for total suspended particulates. However, when all three pollutants were considered simultaneously, only total suspended particulates remained associated with mortality, indicating excess mortality of 6% per 100 micrograms/m3 (rate ratio = 1.058, 95% CI 1.033-1.083), consistent with observations in other cities in the United States and Europe. The authors found no independent effect of ozone, but it is difficult to attribute observed effects to a single pollutant in light of the complexity and variability of the mixture to which people are exposed. Nevertheless, particulate matter may be a useful indicator of the risk associated with ambient air pollution.
V H Borja-Aburto; D P Loomis; S I Bangdiwala; C M Shy; R A Rascon-Pacheco
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of epidemiology     Volume:  145     ISSN:  0002-9262     ISO Abbreviation:  Am. J. Epidemiol.     Publication Date:  1997 Feb 
Date Detail:
Created Date:  1997-02-21     Completed Date:  1997-02-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7910653     Medline TA:  Am J Epidemiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  258-68     Citation Subset:  IM    
Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico.
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MeSH Terms
Air Pollutants / adverse effects,  analysis*
Child, Preschool
Confidence Intervals
Death Certificates
Environmental Monitoring
Infant, Newborn
Mexico / epidemiology
Middle Aged
Ozone / adverse effects,  analysis*
Regression Analysis
Risk Factors
Urban Health*
Reg. No./Substance:
0/Air Pollutants; 10028-15-6/Ozone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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