Journal of Shandong University (Health Sciences) ›› 2025, Vol. 63 ›› Issue (2): 95-103.doi: 10.6040/j.issn.1671-7554.0.2024.0176

• Public Health & Preventive Medicine • Previous Articles     Next Articles

Effects of ozone on emergency room visits of respiratory diseases among children in Hefei City

XIAO Changchun, YU Linling, YAN Derui, ZHU Yu   

  1. Department of Environmental Health, Hefei Center for Disease Control and Prevention, Hefei 230091, Anhui, China
  • Online:2025-03-10 Published:2025-03-07

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Abstract: Objective To explore the effect of O3 exposure on emergency room visits for children with respiratory diseases in Hefei City. Methods Day-by-day data on childrens emergency department visits, air pollutant monitoring data and meteorological data were collected from January 1 2017 to December 31 2019 at a childrens hospital in Hefei City. The effects of different concentrations of O3 on childrens emergency department visits for respiratory diseases were evaluated based on a distributed lag non-linear model(DLNM), in which the variables such as meteorological factors, temporal trends, and days of the week were adjusted. Results A total of 153,995 emergency room visits for childhood respiratory diseases were included in the study period, and the number of emergency room visits for childhood respiratory diseases increased with the increase of O3 concentration. Relative to 60 μg/m3, the RR(95%CI)values of single-day lag effects of O3 concentrations at P25, P50, P75 and P95 on emergency room visits of children were 1.004(1.000-1.008), 1.031(1.016-1.045), 1.062(1.037-1.087)and 1.084(1.053-1.115), respectively, and the RR(95%CI)values of cumulative lag effects were 1.009(1.001-1.013),1.082(1.046-1.119), 1.185(1.112-1.263)and 1.244(1.159-1.336), respectively. Effects of O3 on emergency room visits for respiratory diseases between boys and girls had no statistically significant different. Among different diseases, the RR values of single-day lag effects of O3 at concentrations range of P25 to P95 on the number of emergency room visits for acute upper respiratory infection, acute lower respiratory infection and pneumonia were 1.006-1.072, 1.006-1.058 and 1.005-1.060, and the RR values of cumulative lag effects were 1.009-1.223, 1.003-1.359 and 1.017-1.450, respectively. Conclusion Elevated O3 concentrations in Hefei City may increase the risk of respiratory diseases in children.

Key words: Ozone, Children, Respiratory diseases, Emergency room visit, Distributed lag non-linear model

CLC Number: 

  • R122
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