Risk assessment of excess mortality caused by exposure to atmospheric PM2.5 among population in Changzhou City,2015-2021
Objectives To evaluate the risk of excess mortality caused by atmospheric fine particulate matter(PM2.5)exposure among population in Changzhou City from 2015 to 2021.Methods We collected the monitoring data about death causes of the whole population,environmental air quality and meteorology in Changzhou City.The generalized additive model was used to analyze the effect of PM2.5 on death among the population,and then the number of excess deaths from PM2.5 exposure was estimated.Results From 2015 to 2021,for each 10μg/m3 increase in atmospheric PM2.5 concentration in Changzhou City,the risks of total non-accidental death,death due to circulatory system diseases and death owing to respiratory system diseases among the population increased by 0.71％(95％CI;0.36％-1.05％),0.91％(95％CI;0.37％-1.46％)and 1.14％(95％CI;0.16％-2.13％)respectively.According to WHO recommended limits,the number of days in which the PM2.5 concentration exceeded the standard was 2,469 days.The number of non-accidental excess deaths due to PM2.5 exposure was 3,951,accounting for 2.23％of the total non-accidental deaths,and the number of excess deaths in 2021 decreased by 37.86％compared with that in 2015.Among them,the number of excess deaths due to circulatory system diseases and respiratory system diseases was 2,004(2.90％)and 725(3.95％)respectively.Conclusion The concentration of atmospheric PM2.5 and the number of excess deaths due to PM2.5 among population in Changzhou City during 2015-2021 both showed downward trends in general.Air pollution control measures bring better health benefits.
fine particulate matter(PM2.5)excess mortalityhealth risk assessmenttime-series analysis
NETL
NSTL
万方数据
