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. 2015 Jul 28;10(7):e0134233.
doi: 10.1371/journal.pone.0134233. eCollection 2015.

The Impacts of Heatwaves on Mortality Differ with Different Study Periods: A Multi-City Time Series Investigation

Xiao Yu Wang  1 , Yuming Guo  2 , Gerry FitzGerald  1 , Peter Aitken  3 , Vivienne Tippett  4 , Dong Chen  5 , Xiaoming Wang  6 , Shilu Tong  1
Affiliations

The Impacts of Heatwaves on Mortality Differ with Different Study Periods: A Multi-City Time Series Investigation

Xiao Yu Wang et al. PLoS One. .

Abstract

Background: Different locations and study periods were used in the assessment of the relationships between heatwaves and mortality. However, little is known about the comparability and consistency of the previous effect estimates in the literature. This study assessed the heatwave-mortality relationship using different study periods in the three largest Australian cities (Brisbane, Melbourne and Sydney).

Methods: Daily data on climatic variables and mortality for the three cities were obtained from relevant government agencies between 1988 and 2011. A consistent definition of heatwaves was used for these cities. Poisson generalised additive model was fitted to assess the impact of heatwaves on mortality.

Results: Non-accidental and circulatory mortality significantly increased during heatwaves across the three cities even with different heatwave definitions and study periods. Using the summer data resulted in the largest increase in effect estimates compared to those using the warm season or the whole year data.

Conclusion: The findings may have implications for developing standard approaches to evaluating the heatwave-mortality relationship and advancing heat health warning systems. It also provides an impetus to methodological advance for assessing climate change-related health consequences.

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Conflict of interest statement

Competing Interests: The authors have read the journal's policy and the authors of this manuscript have the following competing interests: This study was partly funded by Horticulture Australia Limited using the Nursery Industry Levy (Project # NY 11013). There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

References

    1. Hajat S, Kosatky T (2010) Heat-related mortality: a review and exploration of heterogeneity. J Epidemiol Community Health 64: 753–760. 10.1136/jech.2009.087999 - DOI - PubMed
    1. Tong S, Ren C, Becker N (2010) Excess deaths during the 2004 heatwave in Brisbane, Australia. Int J Biometeorol 54: 393–400. 10.1007/s00484-009-0290-8 - DOI - PubMed
    1. Anderson GB, Bell ML (2011) Heat Waves in the United States: Mortality Risk during Heat Waves and Effect Modification by Heat Wave Characteristics in 43 U.S. Communities. Environ Health Perspect 119: 210–218. 10.1289/ehp.1002313 - DOI - PMC - PubMed
    1. Son JY, Lee JT, Anderson GB, Bell ML (2012) The impact of heat waves on mortality in seven major cities in Korea. Environmental Health Perspectives 120: 566–571. 10.1289/ehp.1103759 - DOI - PMC - PubMed
    1. Baccini M, Kosatsky T, Analitis A, Anderson HR, D'Ovidio M, Menne B, et al. (2011) Impact of heat on mortality in 15 European cities: attributable deaths under different weather scenarios. J Epidemiol Community Health 65: 64–70. 10.1136/jech.2008.085639 - DOI - PubMed

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