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Short-term exposure to ambient particulate matter and emergency ambulance dispatch for acute illness in Japan
Kyoto University, Kyoto, Japan.
Kyoto University, Kyoto, Japan.
Södertörn University, School of Social Sciences, Sociology. Södertörn University, School of Social Sciences, SCOHOST (Stockholm Centre on Health of Societies in Transition).
Ritsumeikan University, Japan.
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2016 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 566-567, 528-535 p.Article in journal (Refereed) PublishedText
Abstract [en]

Short-term exposure to air pollution may be linked to negative health outcomes that require an emergency medical response. However, few studies have been undertaken on this phenomenon to date. The aim of this study therefore was to examine the association between short-term exposure to ambient suspended particulate matter (SPM) and emergency ambulance dispatches (EADs) for acute illness in Japan. Daily EAD data, daily mean SPM and meteorological data were obtained for four prefectures in the Kanto region of Japan for the period from 2007 to 2011. The area-specific association between daily EAD for acute illness and SPM was explored using generalized linear models while controlling for ambient temperature, relative humidity, seasonality, long-term trends, day of the week and public holidays. Stratified analyses were conducted to evaluate the modifying effects of age, sex and medical conditions. Area-specific estimates were combined using meta-analyses. For the total study period the mean level of SPM was 23.7 μg/m3. In general, higher SPM was associated with a significant increase in EAD for acute illness [estimated pooled relative risk (RR): 1.008, 95% CI: 1.007 to 1.010 per 10 μg/m3 increase in SPM at lag 0-1]. The effects of SPM on EAD for acute illness were significantly greater for moderate/mild medical conditions (e.g. cases that resulted in <3 weeks hospitalization or no hospitalization) when compared to severe medical conditions (e.g. critical cases, and cases that led to >3 weeks hospitalization or which resulted in death). Using EAD data, this study has shown the adverse health effects of ambient air pollution. This highlights the importance of reducing the level of air pollution in order to maintain population health and well-being.

Place, publisher, year, edition, pages
2016. Vol. 566-567, 528-535 p.
Keyword [en]
Emergency ambulance dispatch (EAD), Japan, Short-term exposure, Suspended particulate matter (SPM)
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URN: urn:nbn:se:sh:diva-30624DOI: 10.1016/j.scitotenv.2016.05.054ISI: 000381060900055PubMedID: 27235903ScopusID: 2-s2.0-84969668393OAI: diva2:949350
Available from: 2016-07-19 Created: 2016-07-18 Last updated: 2016-09-01Bibliographically approved

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