| Ozone, area social conditions, and mortality in Mexico City. | |
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MedLine Citation:
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PMID: 15016589 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We investigated whether the association of daily mortality and ambient ozone differs by age and area social conditions of the region of residence using a time-series analysis. The study setting was metropolitan Mexico City, a high altitude city situated in a valley, with an estimated 20 million inhabitants, large socioeconomic gradients, and ozone levels frequently exceeding international standards. We stratified daily deaths by six census-derived socioeconomic indicators, based on characteristics of the county where decedents lived. We used Poisson regression to model the association between daily mortality and ozone levels (on the day of death and the previous day) in separate models, stratified by area socioeconomic level and age, and controlling for time trends and temperature. Ozone was positively associated with total mortality [0.65% increase per 10 ppb increment, 95% confidence interval (CI): 0.02%, 1.28%] and for mortality among those over age 65 [1.39% increase per 10 ppb increment, 95% CI: 0.51%, 2.28%]. Associations between ozone and all-age mortality did not show any consistent patterns according to socioeconomic gradients. We conclude that elderly people are at higher risk for ozone-associated mortality. Though county-level social indicators in Mexico City were not strong markers of vulnerability to ozone-associated acute mortality in this analysis, complex associations between individual and area-level factors may exist that would require additional data and further analyses to elucidate. |
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Authors:
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Marie S O'Neill; Dana Loomis; Victor H Borja-Aburto |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Environmental research Volume: 94 ISSN: 0013-9351 ISO Abbreviation: Environ. Res. Publication Date: 2004 Mar |
Date Detail:
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Created Date: 2004-03-12 Completed Date: 2004-05-14 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0147621 Medline TA: Environ Res Country: United States |
Other Details:
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Languages: eng Pagination: 234-42 Citation Subset: IM |
Affiliation:
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Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. moneill@hsph.harvard.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Age Factors Air Pollutants / toxicity* Humans Mexico Models, Statistical Mortality* Ozone / toxicity* Regression Analysis Social Conditions / statistics & numerical data* Temperature Urban Health / statistics & numerical data* |
| Grant Support | |
ID/Acronym/Agency:
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5 T32 ES07069-22/ES/NIEHS NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Air Pollutants; 10028-15-6/Ozone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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