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dc.contributor.authorRen, Cizao
dc.contributor.authorMelly, Steven John
dc.contributor.authorSchwartz, Joel David
dc.date.accessioned2012-01-21T01:53:19Z
dc.date.issued2010
dc.identifier.citationRen, Cizao, Steve Melly, and Joel Schwartz. 2010. Modifiers of short-term effects of ozone on mortality in eastern Massachusetts: a case-crossover analysis at individual level. Environmental Health 9: 3.en_US
dc.identifier.issn1476-069Xen_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:8000907
dc.description.abstractBackground: Substantial epidemiological studies demonstrate associations between exposure to ambient ozone and mortality. A few studies simply examine the modification of this ozone effect by individual characteristics and socioeconomic status, but socioeconomic status was usually coded at the city level. Methods: This study used a case-crossover design to examine whether impacts of ozone on mortality were modified by socioeconomic status coded at the tract or characteristics at an individual level in eastern Massachusetts, US for a period May-September, 1995-2002, with a total of 157,197 non-accident deaths aging 35 years or older. We used moving averages of maximal 8-hour concentrations of ozone monitored at 8 stationary stations as personal exposure. Results: A 10 ppb increase in the four-day moving average of maximal 8-hour ozone was associated with 1.68% (95% confidence interval (CI): 0.51%, 2.87%), 1.96% (95% CI: -1.83%, 5.90%), 8.28% (95% CI: 0.66%, 16.48%), 0.44% (95% CI: -1.45%, 2.37%), -0.83% (95% CI: -2.94%, 1.32%), -1.09% (95% CI: -4.27%, 2.19%) and 6.5% (95% CI: 1.74%, 11.49%) changes in all natural deaths, respiratory disorders, diabetes, cardiovascular diseases, heart diseases, acute myocardial infarction and stroke, respectively. We did not find any evidence that the associations were significantly modified by socioeconomic status or individual characteristics although small differences of estimates across subpopulations were demonstrated. Conclusions: Exposure to ozone was associated with specific cause mortality in Eastern Massachusetts during May-September, 1995-2002. There was no evidence that effects of ozone on mortality were significantly modified by socioeconomic status and individual characteristics.en_US
dc.language.isoen_USen_US
dc.publisherBioMed Centralen_US
dc.relation.isversionofdoi://10.1186/1476-069X-9-3en_US
dc.relation.hasversionhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2825215/pdf/en_US
dash.licenseLAA
dc.titleModifiers of Short-term Effects of Ozone on Mortality in Eastern Massachusetts: A Case-crossover Analysis at Individual Levelen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalEnvironmental Healthen_US
dash.depositing.authorMelly, Steven John
dc.date.available2012-01-21T01:53:19Z
dash.affiliation.otherSPH^Exposure Epidemiology and Risk Programen_US
dash.affiliation.otherHMS^Medicine-Brigham and Women's Hospitalen_US
dash.affiliation.otherSPH^Exposure Epidemiology and Risk Programen_US
dc.identifier.doi10.1186/1476-069X-9-3*
dash.contributor.affiliatedMelly, Steven
dash.contributor.affiliatedSchwartz, Joel
dc.identifier.orcid0000-0002-2557-150X


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