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Article: Short-term associations of cause-specific emergency hospitalizations and particulate matter chemical components in Hong Kong

TitleShort-term associations of cause-specific emergency hospitalizations and particulate matter chemical components in Hong Kong
Authors
Keywordsparticulate matter
hospitalization
chemical constituents
air pollution
time series
Issue Date2014
Citation
American Journal of Epidemiology, 2014, v. 179, n. 9, p. 1086-1095 How to Cite?
AbstractDespite an increasing number of recent studies, the overall epidemiologic evidence associating specific particulate matter chemical components with health outcomes has been mixed. The links between components and hospitalizations have rarely been examined in Asia. We estimated associations between exposures to 18 chemical components of particulate matter with aerodynamic diameter less than 10 μm (PM10) and daily emergency cardiorespiratory hospitalizations in Hong Kong, China, between 2001 and 2007. Carbonaceous particulate matter, sulfate, nitrate, and ammonium accounted for two-thirds of the PM10 mass. After adjustment for time-varying confounders, a 3.4-μg/m3 increment in 2-day moving average of same-day and previous-day nitrate concentrations was associated with the largest increase of 1.32% (95% confidence interval: 0.73, 1.92) in cardiovascular hospitalizations; elevation in manganese level (0.02 μg/m3) was linked to a 0.91% (95% confidence interval: 0.19, 1.64) increase in respiratory hospitalizations. Upon further adjustment for gaseous copollutants, nitrate, sodium ion, chloride ion, magnesium, and nickel remained significantly associated with cardiovascular hospitalizations, whereas sodium ion, aluminum, and magnesium, components abundantly found in coarser PM10, were associated with respiratory hospitalizations. Most positive links were seen during the cold season. These findings lend support to the growing body of literature concerning the health associations of particulate matter composition and provide important insight into the differential health risks of components found in fine and coarse modes of PM10. © 2014 The Author.
Persistent Identifierhttp://hdl.handle.net/10722/207093
ISSN
2015 Impact Factor: 5.036
2015 SCImago Journal Rankings: 3.047

 

DC FieldValueLanguage
dc.contributor.authorPun, Vivianchit-
dc.contributor.authorYu, Ignatius-
dc.contributor.authorQiu, Hong-
dc.contributor.authorHo, Kinfai-
dc.contributor.authorSun, Zhiwei-
dc.contributor.authorLouie, Peter Kwok Keung-
dc.contributor.authorWong, Tzewai-
dc.contributor.authorTian, Linwei-
dc.date.accessioned2014-12-09T04:31:23Z-
dc.date.available2014-12-09T04:31:23Z-
dc.date.issued2014-
dc.identifier.citationAmerican Journal of Epidemiology, 2014, v. 179, n. 9, p. 1086-1095-
dc.identifier.issn0002-9262-
dc.identifier.urihttp://hdl.handle.net/10722/207093-
dc.description.abstractDespite an increasing number of recent studies, the overall epidemiologic evidence associating specific particulate matter chemical components with health outcomes has been mixed. The links between components and hospitalizations have rarely been examined in Asia. We estimated associations between exposures to 18 chemical components of particulate matter with aerodynamic diameter less than 10 μm (PM10) and daily emergency cardiorespiratory hospitalizations in Hong Kong, China, between 2001 and 2007. Carbonaceous particulate matter, sulfate, nitrate, and ammonium accounted for two-thirds of the PM10 mass. After adjustment for time-varying confounders, a 3.4-μg/m3 increment in 2-day moving average of same-day and previous-day nitrate concentrations was associated with the largest increase of 1.32% (95% confidence interval: 0.73, 1.92) in cardiovascular hospitalizations; elevation in manganese level (0.02 μg/m3) was linked to a 0.91% (95% confidence interval: 0.19, 1.64) increase in respiratory hospitalizations. Upon further adjustment for gaseous copollutants, nitrate, sodium ion, chloride ion, magnesium, and nickel remained significantly associated with cardiovascular hospitalizations, whereas sodium ion, aluminum, and magnesium, components abundantly found in coarser PM10, were associated with respiratory hospitalizations. Most positive links were seen during the cold season. These findings lend support to the growing body of literature concerning the health associations of particulate matter composition and provide important insight into the differential health risks of components found in fine and coarse modes of PM10. © 2014 The Author.-
dc.languageeng-
dc.relation.ispartofAmerican Journal of Epidemiology-
dc.subjectparticulate matter-
dc.subjecthospitalization-
dc.subjectchemical constituents-
dc.subjectair pollution-
dc.subjecttime series-
dc.titleShort-term associations of cause-specific emergency hospitalizations and particulate matter chemical components in Hong Kong-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1093/aje/kwu026-
dc.identifier.pmid24644295-
dc.identifier.scopuseid_2-s2.0-84899525347-
dc.identifier.volume179-
dc.identifier.issue9-
dc.identifier.spage1086-
dc.identifier.epage1095-
dc.identifier.eissn1476-6256-

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