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https://hdl.handle.net/2440/113634
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Type: | Journal article |
Title: | Evaluation of a heat warning system in Adelaide, South Australia, using case-series analysis |
Author: | Nitschke, M. Tucker, G. Hansen, A. Williams, S. Zhang, Y. Bi, P. |
Citation: | BMJ Open, 2016; 6(7):e012125-1-e012125-9 |
Publisher: | BMJ Publishing |
Issue Date: | 2016 |
ISSN: | 2044-6055 2044-6055 |
Statement of Responsibility: | Monika Nitschke, Graeme Tucker, Alana Hansen, Susan Williams, Ying Zhang, Peng Bi |
Abstract: | Background: Heatwave warning systems aim to assist in reducing health effects during extreme heat. Evaluations of such systems have been limited. This study explored the effect of a heatwave warning programme on morbidity and mortality in Adelaide, South Australia, by comparing extreme events in 2009 and 2014, the latter with exposure to the preventive programme. Methods: The health outcomes during the two heatwaves were compared using the incidence rate ratios (IRRs) of daily ambulance call-outs, emergency presentations and mortality data during the heatwaves compared with non-heatwave periods during the warm seasons. Excess or reduced numbers of cases were calculated and the differences in cases between the two heatwaves were estimated. Results: IRRs for total ambulance call-outs and emergency presentations were lower during the 2014 heatwaves compared with the 2009 event. The estimated differences in health-specific outcomes between 2009 and 2014 were statistically significant with 207 (59%) for cardiac-related call-outs, 134 (30%) for renal and 145 (56%) for heat-related emergency presentations. Mortality was not reduced in 2014. There were an estimated 34.5 excess deaths in 2009 and 38.2 in 2014. Conclusions: Morbidity outcomes were reduced significantly during the 2014 event. The fact that cardiac, renal and heat-related diagnoses were significantly reduced is likely to be associated with the intervention in 2014, which comprised a public warning through media and intense preventive measures directed to individual populations at risk. Further analysis of risk factors of mortality during heatwaves should be explored. |
Keywords: | Heatwave; health intervention |
Rights: | Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/ This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ |
DOI: | 10.1136/bmjopen-2016-012125 |
Published version: | http://dx.doi.org/10.1136/bmjopen-2016-012125 |
Appears in Collections: | Aurora harvest 3 Public Health publications |
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hdl_113634.pdf | Published Version | 765.4 kB | Adobe PDF | View/Open |
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