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Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis

BACKGROUND: In July 2013, an extended heat episode with extreme high temperature covered Pudong New Area, the largest district in Shanghai. The current study estimates the impacts of temperature and heat waves on emergency department visits (EDV) and emergency ambulance dispatches (EAD) using time-s...

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Autores principales: Sun, Xiaoming, Sun, Qiao, Yang, Minjuan, Zhou, Xianfeng, Li, Xiaopan, Yu, Aiqing, Geng, Fuhai, Guo, Yuming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4201734/
https://www.ncbi.nlm.nih.gov/pubmed/25273545
http://dx.doi.org/10.1186/1476-069X-13-76
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author Sun, Xiaoming
Sun, Qiao
Yang, Minjuan
Zhou, Xianfeng
Li, Xiaopan
Yu, Aiqing
Geng, Fuhai
Guo, Yuming
author_facet Sun, Xiaoming
Sun, Qiao
Yang, Minjuan
Zhou, Xianfeng
Li, Xiaopan
Yu, Aiqing
Geng, Fuhai
Guo, Yuming
author_sort Sun, Xiaoming
collection PubMed
description BACKGROUND: In July 2013, an extended heat episode with extreme high temperature covered Pudong New Area, the largest district in Shanghai. The current study estimates the impacts of temperature and heat waves on emergency department visits (EDV) and emergency ambulance dispatches (EAD) using time-series approaches in Pudong, from 2011 to 2013. METHODS: An over-dispersed Poisson generalized additive model was used to examine the association between temperature and EDV and EAD. Heat wave effects with different heat wave definitions considering both the intensity and durations were also estimated. RESULTS: Immediate effects of temperature on EDV and EAD were detected, after controlling for trends of time and day of week. The exposure-response relationships showed J-shaped curves with higher threshold temperature of EDV than that of EAD visually. When estimating risk changes on heat days compared with non-heat days using different percentiles of daily mean temperature in definition, EAD showed significant increases while non-significant or even negative associations were found for EDV. Heat wave with intensity above the 90th percentile had 2.62% (95% CI: 1.78%, 3.46%) and 0.95% (95% CI: 0.22%, 1.69%) increases in EDV for a duration of at least 2 days and 3 days respectively. The relative increase of EAD were 4.85% (95% CI: 1.42%, 8.39%) and 3.94% (95% CI: 0.88%, 7.10%). CONCLUSIONS: Varied effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches were investigated. This wider view of the health effect of temperature indicated that interventions for both public health education and health services management should be considered in the study region. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/1476-069X-13-76) contains supplementary material, which is available to authorized users.
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spelling pubmed-42017342014-10-19 Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis Sun, Xiaoming Sun, Qiao Yang, Minjuan Zhou, Xianfeng Li, Xiaopan Yu, Aiqing Geng, Fuhai Guo, Yuming Environ Health Research BACKGROUND: In July 2013, an extended heat episode with extreme high temperature covered Pudong New Area, the largest district in Shanghai. The current study estimates the impacts of temperature and heat waves on emergency department visits (EDV) and emergency ambulance dispatches (EAD) using time-series approaches in Pudong, from 2011 to 2013. METHODS: An over-dispersed Poisson generalized additive model was used to examine the association between temperature and EDV and EAD. Heat wave effects with different heat wave definitions considering both the intensity and durations were also estimated. RESULTS: Immediate effects of temperature on EDV and EAD were detected, after controlling for trends of time and day of week. The exposure-response relationships showed J-shaped curves with higher threshold temperature of EDV than that of EAD visually. When estimating risk changes on heat days compared with non-heat days using different percentiles of daily mean temperature in definition, EAD showed significant increases while non-significant or even negative associations were found for EDV. Heat wave with intensity above the 90th percentile had 2.62% (95% CI: 1.78%, 3.46%) and 0.95% (95% CI: 0.22%, 1.69%) increases in EDV for a duration of at least 2 days and 3 days respectively. The relative increase of EAD were 4.85% (95% CI: 1.42%, 8.39%) and 3.94% (95% CI: 0.88%, 7.10%). CONCLUSIONS: Varied effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches were investigated. This wider view of the health effect of temperature indicated that interventions for both public health education and health services management should be considered in the study region. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/1476-069X-13-76) contains supplementary material, which is available to authorized users. BioMed Central 2014-10-02 /pmc/articles/PMC4201734/ /pubmed/25273545 http://dx.doi.org/10.1186/1476-069X-13-76 Text en © Sun et al.; licensee BioMed Central Ltd. 2014 This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Sun, Xiaoming
Sun, Qiao
Yang, Minjuan
Zhou, Xianfeng
Li, Xiaopan
Yu, Aiqing
Geng, Fuhai
Guo, Yuming
Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis
title Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis
title_full Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis
title_fullStr Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis
title_full_unstemmed Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis
title_short Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis
title_sort effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in pudong new area, china: a time series analysis
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4201734/
https://www.ncbi.nlm.nih.gov/pubmed/25273545
http://dx.doi.org/10.1186/1476-069X-13-76
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