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

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 t...

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Autores principales: Clemens, Kristin K., Ouédraogo, Alexandra M., Li, Lihua, Voogt, James A., Gilliland, Jason, Krayenhoff, E. Scott, Leroyer, Sylvie, Shariff, Salimah Z.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8046761/
https://www.ncbi.nlm.nih.gov/pubmed/33854077
http://dx.doi.org/10.1038/s41598-021-87203-0
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author Clemens, Kristin K.
Ouédraogo, Alexandra M.
Li, Lihua
Voogt, James A.
Gilliland, Jason
Krayenhoff, E. Scott
Leroyer, Sylvie
Shariff, Salimah Z.
author_facet Clemens, Kristin K.
Ouédraogo, Alexandra M.
Li, Lihua
Voogt, James A.
Gilliland, Jason
Krayenhoff, E. Scott
Leroyer, Sylvie
Shariff, Salimah Z.
author_sort Clemens, Kristin K.
collection PubMed
description 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.
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spelling pubmed-80467612021-04-15 Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources Clemens, Kristin K. Ouédraogo, Alexandra M. Li, Lihua Voogt, James A. Gilliland, Jason Krayenhoff, E. Scott Leroyer, Sylvie Shariff, Salimah Z. Sci Rep Article 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. Nature Publishing Group UK 2021-04-14 /pmc/articles/PMC8046761/ /pubmed/33854077 http://dx.doi.org/10.1038/s41598-021-87203-0 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Clemens, Kristin K.
Ouédraogo, Alexandra M.
Li, Lihua
Voogt, James A.
Gilliland, Jason
Krayenhoff, E. Scott
Leroyer, Sylvie
Shariff, Salimah Z.
Evaluating the association between extreme heat and mortality in urban Southwestern Ontario using different temperature data sources
title 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_short 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
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8046761/
https://www.ncbi.nlm.nih.gov/pubmed/33854077
http://dx.doi.org/10.1038/s41598-021-87203-0
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