Objective To understand the current situation of air pollution in Guangyuan City in 2021,and to explore the impact of air pollutants on non-accidental mortality and outpatient visits in hospitals.Methods Meteorological monitoring data,ambient air quality data,death cause monitoring data and hospital treatment data in 2021 were collected from Guangyuan Meteorological Bureau,Ecological Environment Bureau,Center for Disease Prevention and Control and sentinel hospitals.Spearman correlation analysis was used to analyze the correlation between air pollutants and meteorological factors.Statistical analysis of the correlation between air pollutants and population mortality and hospital visits was conducted by R 3.4.3 software under the generalized additive model of time series.The test level was α=0.05.Results SO2,NO2,CO and O3 were positively correlated with outpatient visits in hospitals.For every 10μg/m3 increase of PM25,PM10,SO2 and NO2 concentrations(Lag03),the numbers of non-accidental deaths in the population increased by 2.74％(95％CI:0.88％-4.63％),1.90％(95％CI:0.73％-3.09％),32.26％(95％CI:13.77％-53.76％)and 8.41％(95％CI:4.42％-12.55％),respectively.The number of non-accidental deaths increased by 0.39％(95％CI:0.19％-0.60％)for every 0.01 mg/m3 increase in CO concentration(Lag03).There was a more significant lag effect on non-accidental deaths among people aged ≥65 years old.Conclusions Air pollutants PM2.5,PM10,SO2,NO2 and CO could increase the number of non-accidental deaths in the population.NO2 and O3 could increase the number of outpatient visits in hospitals,with a lag effect.
air pollutiontime series analysisnon-accidental deaththe number of outpatients in hospitals
维普
万方数据
