Effects of PM2.5 on hospital visits for respiratory symptoms infection in children in xining district during 2018-2020:a time series analysis
Objective To evaluate the effects of PM25 on hospital visits for respiratory symptoms,upper respiratory,chronic respiratory disease infection in children in Xining district.Methods Daily meteorological data,air pollutants levels and hospital visits for respiratory symptoms,upper respiratory,chronic respiratory disease infection in children between 2018 and 2020 were collected for analysis.The generalized linear model(GLM)based on Quasi-Poisson regression was used for estimating the effects of PM25 on hospital visits for respiratory symptoms,upper respiratory,chronic respiratory disease infection in children.The confounding factors of seasonal trend,long-term trends,meteorological factors and week effect were controlled in the model.The lag pattern of lag days(lag0-lag7)and moving average effect(lag01-lag07)were conducted.The excessive risks(ER)of hospital visits for respiratory symptoms,upper respiratory,chronic respiratory disease infection in children were calculated with an increase of 10 μg/m3 of PM2.5 respectively.Results The monthly characteristics were showed in the daily PM2.5 and hospital visits for respiratory symptoms,upper respiratory,chronic respiratory disease infection in children from 2018 and 2020 in Xining.The average of annual PM2.5 concentration was 32 μg/m3.The average number of hospital visits for respiratory symptoms,upper respiratory,chronic respiratory tract infection in children were 119,52 and 32 cases.With an increase of 10 μg/m3 of PM25,hospital visits for respiratory symptoms,upper respiratory,chronic respiratory infection in children of lag1 d,lag1 d and lag0 d dreached the maximum,and the risk of visit sincreased by 2.02％(95％CI:1.64％-2.41％),2.18％(95％CI:1.60％-2.77％)and 2.10％(95％CI:1.41％-2.81％)respectively.PM25 had certain lag effect.Conclusion The main air pollutants PM2.5 has acute effects on hospital visits for respiratory symptoms,upper respiratory,chronic respiratory infection in children in Xining district.
PM2.5Respiratory diseaseChildrenTime series analysis
万方数据
