Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources

Abstract Urban areas have complex thermal distribution. We examined the association between extreme temperature and mortality in urban Ontario, using two temperature data sources: high-resolution and weather station data. We used distributed lag non-linear Poisson models to examine census division-s...

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Autores principales:	Kristin K. Clemens, Alexandra M. Ouédraogo, Lihua Li, James A. Voogt, Jason Gilliland, E. Scott Krayenhoff, Sylvie Leroyer, Salimah Z. Shariff
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b0dc6ca04b1642b99e50d9f5a901351c
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spelling	oai:doaj.org-article:b0dc6ca04b1642b99e50d9f5a901351c2021-12-02T18:02:57ZEvaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources10.1038/s41598-021-87203-02045-2322https://doaj.org/article/b0dc6ca04b1642b99e50d9f5a901351c2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87203-0https://doaj.org/toc/2045-2322Abstract Urban areas have complex thermal distribution. We examined the association between extreme temperature and mortality in urban Ontario, using two temperature data sources: high-resolution and weather station data. We used distributed lag non-linear Poisson models to examine census division-specific temperature–mortality associations between May and September 2005–2012. We used random-effect multivariate meta-analysis to pool results, adjusted for air pollution and temporal trends, and presented risks at the 99th percentile compared to minimum mortality temperature. As additional analyses, we varied knots, examined associations using different temperature metrics (humidex and minimum temperature), and explored relationships using different referent values (most frequent temperature, 75th percentile of temperature distribution). Weather stations yielded lower temperatures across study months. U-shaped associations between temperature and mortality were observed using both high-resolution and weather station data. Temperature–mortality relationships were not statistically significant; however, weather stations yielded estimates with wider confidence intervals. Similar findings were noted in additional analyses. In urban environmental health studies, high-resolution temperature data is ideal where station observations do not fully capture population exposure or where the magnitude of exposure at a local level is important. If focused upon temperature–mortality associations using time series, either source produces similar temperature–mortality relationships.Kristin K. ClemensAlexandra M. OuédraogoLihua LiJames A. VoogtJason GillilandE. Scott KrayenhoffSylvie LeroyerSalimah Z. ShariffNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kristin K. Clemens Alexandra M. Ouédraogo Lihua Li James A. Voogt Jason Gilliland E. Scott Krayenhoff Sylvie Leroyer Salimah Z. Shariff Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources
description	Abstract Urban areas have complex thermal distribution. We examined the association between extreme temperature and mortality in urban Ontario, using two temperature data sources: high-resolution and weather station data. We used distributed lag non-linear Poisson models to examine census division-specific temperature–mortality associations between May and September 2005–2012. We used random-effect multivariate meta-analysis to pool results, adjusted for air pollution and temporal trends, and presented risks at the 99th percentile compared to minimum mortality temperature. As additional analyses, we varied knots, examined associations using different temperature metrics (humidex and minimum temperature), and explored relationships using different referent values (most frequent temperature, 75th percentile of temperature distribution). Weather stations yielded lower temperatures across study months. U-shaped associations between temperature and mortality were observed using both high-resolution and weather station data. Temperature–mortality relationships were not statistically significant; however, weather stations yielded estimates with wider confidence intervals. Similar findings were noted in additional analyses. In urban environmental health studies, high-resolution temperature data is ideal where station observations do not fully capture population exposure or where the magnitude of exposure at a local level is important. If focused upon temperature–mortality associations using time series, either source produces similar temperature–mortality relationships.
format	article
author	Kristin K. Clemens Alexandra M. Ouédraogo Lihua Li James A. Voogt Jason Gilliland E. Scott Krayenhoff Sylvie Leroyer Salimah Z. Shariff
author_facet	Kristin K. Clemens Alexandra M. Ouédraogo Lihua Li James A. Voogt Jason Gilliland E. Scott Krayenhoff Sylvie Leroyer Salimah Z. Shariff
author_sort	Kristin K. Clemens
title	Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources
title_short	Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources
title_full	Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources
title_fullStr	Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources
title_full_unstemmed	Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources
title_sort	evaluating the association between extreme heat and mortality in urban southwestern ontario using different temperature data sources
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b0dc6ca04b1642b99e50d9f5a901351c
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Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources

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