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Article: Cool and dry weather enhances the effects of air pollution on emergency IHD hospital admissions

TitleCool and dry weather enhances the effects of air pollution on emergency IHD hospital admissions
Authors
KeywordsEmergency hospital admissions
Air pollution
Ischemic heart disease
Modification
Weather factors
Issue Date2013
Citation
International Journal of Cardiology, 2013, v. 168, n. 1, p. 500-505 How to Cite?
AbstractBackground: Associations between ambient pollution and cardiovascular morbidity including ischemic heart disease (IHD) have been confirmed. Weather factors such as temperature, season and relative humidity (RH) may modify the effects of pollution. We conducted this study to examine the effects of air pollution on emergency IHD hospital admissions varied across seasons and RH levels, and to explore the possible joint modification of weather factors on pollution effects. Methods: Daily time series of air pollution concentrations, mean temperature and RH were collected from IHD hospital admissions from 1998 to 2007 in Hong Kong. We used generalized additive Poisson models with interaction term to estimate the pollution effects varied across seasons and RH levels, after adjusting for time trends, weather conditions, and influenza outbreaks. Results: An increase in the detrimental effects of air pollution in cool season and on low humidity days was observed. In the cool and dry season, a 10 μg/m3 increment of lag03 exposure was associated with an increase of emergency IHD admissions by 1.82% (95% CI: 1.24-2.40%), 3.89% (95% CI: 3.08-4.70%), and 2.19% (95% CI: 1.33-3.06%) for particles with an aerodynamic diameter less than 10 μm (PM10), nitrogen dioxide (NO2), and ozone (O3), respectively. The effects of pollutants decreased greatly and lost statistical significance in the warm and humid season. Conclusions: We found season and RH jointly modified the associations between ambient pollution and IHD admissions, resulting in increased IHD admissions in the cool and dry season and reduced admissions in the warm and humid season. © 2012 Elsevier Ireland Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/207077
ISSN
2015 Impact Factor: 4.638
2015 SCImago Journal Rankings: 1.513

 

DC FieldValueLanguage
dc.contributor.authorQiu, Hong-
dc.contributor.authorYu, Ignatius-
dc.contributor.authorWang, Xiaorong-
dc.contributor.authorTian, Linwei-
dc.contributor.authorTse, Lapah-
dc.contributor.authorWong, Tzewai-
dc.date.accessioned2014-12-09T04:31:21Z-
dc.date.available2014-12-09T04:31:21Z-
dc.date.issued2013-
dc.identifier.citationInternational Journal of Cardiology, 2013, v. 168, n. 1, p. 500-505-
dc.identifier.issn0167-5273-
dc.identifier.urihttp://hdl.handle.net/10722/207077-
dc.description.abstractBackground: Associations between ambient pollution and cardiovascular morbidity including ischemic heart disease (IHD) have been confirmed. Weather factors such as temperature, season and relative humidity (RH) may modify the effects of pollution. We conducted this study to examine the effects of air pollution on emergency IHD hospital admissions varied across seasons and RH levels, and to explore the possible joint modification of weather factors on pollution effects. Methods: Daily time series of air pollution concentrations, mean temperature and RH were collected from IHD hospital admissions from 1998 to 2007 in Hong Kong. We used generalized additive Poisson models with interaction term to estimate the pollution effects varied across seasons and RH levels, after adjusting for time trends, weather conditions, and influenza outbreaks. Results: An increase in the detrimental effects of air pollution in cool season and on low humidity days was observed. In the cool and dry season, a 10 μg/m3 increment of lag03 exposure was associated with an increase of emergency IHD admissions by 1.82% (95% CI: 1.24-2.40%), 3.89% (95% CI: 3.08-4.70%), and 2.19% (95% CI: 1.33-3.06%) for particles with an aerodynamic diameter less than 10 μm (PM10), nitrogen dioxide (NO2), and ozone (O3), respectively. The effects of pollutants decreased greatly and lost statistical significance in the warm and humid season. Conclusions: We found season and RH jointly modified the associations between ambient pollution and IHD admissions, resulting in increased IHD admissions in the cool and dry season and reduced admissions in the warm and humid season. © 2012 Elsevier Ireland Ltd. All rights reserved.-
dc.languageeng-
dc.relation.ispartofInternational Journal of Cardiology-
dc.subjectEmergency hospital admissions-
dc.subjectAir pollution-
dc.subjectIschemic heart disease-
dc.subjectModification-
dc.subjectWeather factors-
dc.titleCool and dry weather enhances the effects of air pollution on emergency IHD hospital admissions-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ijcard.2012.09.199-
dc.identifier.pmid23079091-
dc.identifier.scopuseid_2-s2.0-84883752675-
dc.identifier.volume168-
dc.identifier.issue1-
dc.identifier.spage500-
dc.identifier.epage505-
dc.identifier.eissn1874-1754-

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