The impact of ambient temperature exposure on emergency calls-a time series analysis based on data of Xuchang and Zhengzhou
10.3760/cma.j.cn112150-20200603-00816
- VernacularTitle:环境温度暴露对急救呼叫的影响——基于许昌市和郑州市数据的时间序列分析
- Author:
Siqi AI
1
;
Lijie QIN
;
Yingjie CUI
;
Shiyu ZHANG
;
Fei TIAN
;
Huan LI
;
Yin YANG
;
Hualiang LIN
Author Information
1. 中山大学公共卫生学院，广州 510080
- Keywords:
Temperature;
First aid;
Time series analysis
- From:
Chinese Journal of Preventive Medicine
2021;55(2):194-199
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of hourly ambient temperature exposure on emergency calls in Xuchang city and Zhengzhou city.Methods:The hourly meteorological data, air pollution data and emergency calls of Xuchang city and Zhengzhou city were collected from January 1, 2017 to October 31, 2019. A distributed lag non-linear model was used to calculate the excess relative risk ( ERR). The lag effect and cumulative effect of extreme temperature exposure on emergency calls were evaluated. Results:The relationship between hourly temperature exposure and emergency calls was a U-shaped curve. In Xuchang city and Zhengzhou city, both low and high temperatures would increase the number of hourly emergency calls. The earliest effect of low temperature occurred at a lag of 22 h and 52 h, with ERR values (95% CI) about 0.20% (0.00%, 0.39%) and 0.11% (0.00%, 0.22%), respectively. The earliest effect of high temperature occurred at a lag of 0 h with ERR values about 1.59% (1.09%, 2.09%) and 1.45% (1.22%, 1.69%), respectively. High temperature had the greatest impact on the number of emergency calls of cardiovascular disease at a lag of 4-8 h. The cumulative ERR values (95% CI) of the two cities were 8.70% (4.98%, 12.75%) and 3.89% (2.61%, 5.22%), respectively. Conclusion:High temperature exposure could increase the number of emergency calls within a few hours, while the effect of low temperature would not occur until 22 hours later.
