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Title: Temperature Variability and Mortality: A Multi-Country Study
Authors: GUO, YumingGASPARRINI, AntonioARMSTRONG, Ben G.TAWATSUPA, BenjawanTOBIAS, AurelioLAVIGNE, EricCOELHO, Micheline de Sousa Zanotti StagliorioPAN, XiaochuanKIM, HoHASHIZUME, MasahiroHONDA, YasushiGUO, Yue LeonWU, Chang-FuZANOBETTI, AntonellaSCHWARTZ, Joel D.BELL, Michelle L.OVERCENCO, AlaPUNNASIRI, KornwipaLI, ShanshanTIAN, LinweiSALDIVA, PauloWILLIAMS, GailTONG, Shilu
Citation: ENVIRONMENTAL HEALTH PERSPECTIVES, v.124, n.10, p.1554-1559, 2016
Abstract: BACKGROUND: The evidence and method are limited for the associations between mortality and temperature variability (TV) within or between days. OBJECTIVES: We developed a novel method to calculate TV and investigated TV-mortality associations using a large multicountry data set. METHODS: We collected daily data for temperature and mortality from 372 locations in 12 countries/regions (Australia, Brazil, Canada, China, Japan, Moldova, South Korea, Spain, Taiwan, Thailand, the United Kingdom, and the United States). We calculated TV from the standard deviation of the minimum and maximum temperatures during the exposure days. Two-stage analyses were used to assess the relationship between TV and mortality. In the first stage, a Poisson regression model allowing over-dispersion was used to estimate the community-specific TV-mortality relationship, after controlling for potential confounders. In the second stage, a meta-analysis was used to pool the effect estimates within each country. RESULTS: There was a significant association between TV and mortality in all countries, even after controlling for the effects of daily mean temperature. In stratified analyses, TV was still significantly associated with mortality in cold, hot, and moderate seasons. Mortality risks related to TV were higher in hot areas than in cold areas when using short TV exposures (0-1 days), whereas TV-related mortality risks were higher in moderate areas than in cold and hot areas when using longer TV exposures (0-7 days). CONCLUSIONS: The results indicate that more attention should be paid to unstable weather conditions in order to protect health. These findings may have implications for developing public health policies to manage health risks of climate change.
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Artigos e Materiais de Revistas Científicas - FM/MPT
Departamento de Patologia - FM/MPT

Artigos e Materiais de Revistas Científicas - HC/InCor
Instituto do Coração - HC/InCor

Artigos e Materiais de Revistas Científicas - LIM/05
LIM/05 - Laboratório de Poluição Atmosférica Experimental

Artigos e Materiais de Revistas Científicas - ODS/13
ODS/13 - Ação contra a mudança global do clima

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