Document Detail


Ozone, suspended particulates, and daily mortality in Mexico City.
MedLine Citation:
PMID:  9012599     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
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    
Affiliation:
Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Air Pollutants / adverse effects,  analysis*
Child
Child, Preschool
Confidence Intervals
Death Certificates
Environmental Monitoring
Female
Humans
Infant
Infant, Newborn
Male
Mexico / epidemiology
Middle Aged
Mortality*
Ozone / adverse effects,  analysis*
Regression Analysis
Risk Factors
Urban Health*
Weather
Chemical
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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