OCCUPATION AND HEALTH ›› 2023, Vol. 39 ›› Issue (2): 243-246.

• Treatise • Previous Articles     Next Articles

Time series analysis for the influence of gaseous pollutants on the number of inpatients with coronary heart disease in Hebei District of Tianjin in 2019

LI Mei1a, ZHANG Jing-wei1b, DU Juan2   

  1. 1. a Editorial Department of Environmental and Health Journal,b Department of Environment and Health,Tianjin Centers for Disease Control and Prevention,Tianjin 300011,China;
    2. Department of Health Laboratory,School of Public Health,Peking University,Beijing 100191,China
  • Received:2022-12-29 Revised:2023-01-04 Published:2026-03-02
  • Contact: DUJuan,Technician in charge,E-mail:juandu@bjmu.edu.cn

Abstract: Objective To analyze the effect and lag effect of gaseous pollutants on the number of inpatients with coronary heart disease(CHD) in Hebei District of Tianjin in 2019. Methods The concentration of gaseous pollutants,meteorological factors and relevant information of inpatients with CHD in Tianjin Fourth Central Hospital from January 1,2019 to December 31,2019 were collected. The effect of gaseous pollutants on the number of inpatients with CHD was analyzed by generalized additive model. Results The average daily concentrations of gaseous pollutants NO2,O3,SO2 and CO in Hebei District of Tianjin in 2019 were 42.17μg/m3,106.23 μg/m3,10.85 μg/m3 and 0.96 mg/cm3. According to the secondary concentration limit specified in the Ambient Air Quality Standard(GB 3095-2012),NO2 exceeded the standard for 164 days,with theoverstandard rate of 44.93%. The O3 exceeded the standard for 81 days,and the overstandard rate was 22.19%. Neither SO2 nor CO exceeded the standard. The effect of NO2 concentration increasing by 10 μg/m3 on the number of inpatients with CHD reached the maximum after 1 day lag,theexcess rish(ER) value was 3.35(95%CI:0.28-6.52),and the difference was statistically significant(P<0.05). The effect of O3 concentration increasing by 10 μg/m3 on the number of inpatients with CHD reached the maximum when the delay was 7 days,the ER value was -1.28(95%CI:-2.29--0.25),and the difference was statistically significant(P<0.05). The increase of CO and SO2 concentration had no effect on the number of inpatients with CHD. Conclusion The elevated concentration of gaseous pollutant NO2 in Hebei District of Tianjin in 2019 may lead to an increase in the risk of hospitalization for CHD among residents,and it is of great significance to control gaseous pollutants for reducing the hospitalization risk of CHD.

Key words: Gaseous pollutants, Coronary heart disease, Hospitalization

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