Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China

a time series analysis

Xiaoming Sun, Qiao Sun, Minjuan Yang, Xianfeng Zhou, Xiaopan Li, Aiqing Yu, Fuhai Geng, Yuming Guo

Research output: Contribution to journalArticleResearchpeer-review

25 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number76
Number of pages8
JournalEnvironmental Health: A Global Access Science Source
Volume13
DOIs
Publication statusPublished - 2 Oct 2014
Externally publishedYes

Cite this

@article{d0d4967d409e46a0bd1e254532e75f96,
title = "Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China: a time series analysis",
abstract = "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.",
author = "Xiaoming Sun and Qiao Sun and Minjuan Yang and Xianfeng Zhou and Xiaopan Li and Aiqing Yu and Fuhai Geng and Yuming Guo",
year = "2014",
month = "10",
day = "2",
doi = "10.1186/1476-069X-13-76",
language = "English",
volume = "13",
journal = "Environmental Health: A Global Access Science Source",
issn = "1476-069X",
publisher = "Springer-Verlag London Ltd.",

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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. / Sun, Xiaoming; Sun, Qiao; Yang, Minjuan; Zhou, Xianfeng; Li, Xiaopan; Yu, Aiqing; Geng, Fuhai; Guo, Yuming.

In: Environmental Health: A Global Access Science Source, Vol. 13, 76, 02.10.2014.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Effects of temperature and heat waves on emergency department visits and emergency ambulance dispatches in Pudong New Area, China

T2 - a time series analysis

AU - Sun, Xiaoming

AU - Sun, Qiao

AU - Yang, Minjuan

AU - Zhou, Xianfeng

AU - Li, Xiaopan

AU - Yu, Aiqing

AU - Geng, Fuhai

AU - Guo, Yuming

PY - 2014/10/2

Y1 - 2014/10/2

N2 - 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.

AB - 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.

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U2 - 10.1186/1476-069X-13-76

DO - 10.1186/1476-069X-13-76

M3 - Article

VL - 13

JO - Environmental Health: A Global Access Science Source

JF - Environmental Health: A Global Access Science Source

SN - 1476-069X

M1 - 76

ER -