Cargando…

Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China

BACKGROUND: Both outdoor air pollution and extreme temperature have been associated with daily mortality; however, the effect of their interaction is not known. METHODS: This time-series analysis examined the effect of the interaction between outdoor air pollutants and extreme temperature on daily m...

Descripción completa

Detalles Bibliográficos
Autores principales: Cheng, Yuexin, Kan, Haidong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Japan Epidemiological Association 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3798577/
https://www.ncbi.nlm.nih.gov/pubmed/22041530
http://dx.doi.org/10.2188/jea.JE20110049
_version_ 1782287792887300096
author Cheng, Yuexin
Kan, Haidong
author_facet Cheng, Yuexin
Kan, Haidong
author_sort Cheng, Yuexin
collection PubMed
description BACKGROUND: Both outdoor air pollution and extreme temperature have been associated with daily mortality; however, the effect of their interaction is not known. METHODS: This time-series analysis examined the effect of the interaction between outdoor air pollutants and extreme temperature on daily mortality in Shanghai, China. A generalized additive model (GAM) with penalized splines was used to analyze mortality, air pollution, temperature, and covariate data. The effects of air pollutants were stratified by temperature stratum to examine the interaction effect of air pollutants and extreme temperature. RESULTS: We found a statistically significant interaction between PM(10)/O(3) and extreme low temperatures for both total nonaccidental and cause-specific mortality. On days with “normal” temperatures (15th–85th percentile), a 10-µg/m(3) increment in PM(10) corresponded to a 0.17% (95% CI: 0.03%, 0.32%) increase in total mortality, a 0.23% (0.02%, 0.44%) increase in cardiovascular mortality, and a 0.26% (−0.07%, 0.60%) increase in respiratory mortality. On low-temperature days (<15th percentile), the estimates changed to 0.40% (0.21%, 0.58%) for total mortality, 0.49% (0.13%, 0.86%) for cardiovascular mortality, and 0.24% (−0.33%, 0.82%) for respiratory mortality. The interaction pattern of O(3) with lower temperature was similar. The interaction between PM(10)/O(3) and lower temperature remained robust when alternative cut-points were used for temperature strata. CONCLUSIONS: The acute health effects of air pollution might vary by temperature level.
format Online
Article
Text
id pubmed-3798577
institution National Center for Biotechnology Information
language English
publishDate 2012
publisher Japan Epidemiological Association
record_format MEDLINE/PubMed
spelling pubmed-37985772013-12-03 Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China Cheng, Yuexin Kan, Haidong J Epidemiol Original Article BACKGROUND: Both outdoor air pollution and extreme temperature have been associated with daily mortality; however, the effect of their interaction is not known. METHODS: This time-series analysis examined the effect of the interaction between outdoor air pollutants and extreme temperature on daily mortality in Shanghai, China. A generalized additive model (GAM) with penalized splines was used to analyze mortality, air pollution, temperature, and covariate data. The effects of air pollutants were stratified by temperature stratum to examine the interaction effect of air pollutants and extreme temperature. RESULTS: We found a statistically significant interaction between PM(10)/O(3) and extreme low temperatures for both total nonaccidental and cause-specific mortality. On days with “normal” temperatures (15th–85th percentile), a 10-µg/m(3) increment in PM(10) corresponded to a 0.17% (95% CI: 0.03%, 0.32%) increase in total mortality, a 0.23% (0.02%, 0.44%) increase in cardiovascular mortality, and a 0.26% (−0.07%, 0.60%) increase in respiratory mortality. On low-temperature days (<15th percentile), the estimates changed to 0.40% (0.21%, 0.58%) for total mortality, 0.49% (0.13%, 0.86%) for cardiovascular mortality, and 0.24% (−0.33%, 0.82%) for respiratory mortality. The interaction pattern of O(3) with lower temperature was similar. The interaction between PM(10)/O(3) and lower temperature remained robust when alternative cut-points were used for temperature strata. CONCLUSIONS: The acute health effects of air pollution might vary by temperature level. Japan Epidemiological Association 2012-01-05 /pmc/articles/PMC3798577/ /pubmed/22041530 http://dx.doi.org/10.2188/jea.JE20110049 Text en © 2012 Japan Epidemiological Association. http://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Original Article
Cheng, Yuexin
Kan, Haidong
Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China
title Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China
title_full Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China
title_fullStr Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China
title_full_unstemmed Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China
title_short Effect of the Interaction Between Outdoor Air Pollution and Extreme Temperature on Daily Mortality in Shanghai, China
title_sort effect of the interaction between outdoor air pollution and extreme temperature on daily mortality in shanghai, china
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3798577/
https://www.ncbi.nlm.nih.gov/pubmed/22041530
http://dx.doi.org/10.2188/jea.JE20110049
work_keys_str_mv AT chengyuexin effectoftheinteractionbetweenoutdoorairpollutionandextremetemperatureondailymortalityinshanghaichina
AT kanhaidong effectoftheinteractionbetweenoutdoorairpollutionandextremetemperatureondailymortalityinshanghaichina