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ABSTRACT
Although numerous studies have linked asthma to air temperature and pollution, few studies have examined their interactive effects on asthma outpatient visits. This study investigated how air pollutants and their interactions with temperature affect asthma outpatient visits in a city in northern Chinaduring the time period 2018 - 2020 . . As the results, 24,163 asthma outpatients were recorded, a 10-μg/m3 increase in PM10, PM2.5, SO2, and NO2 concentrations was associated with significant increases in visits of 3.47% (95% CI: 2.35%–4.60%), 0.83% (95% CI: 0.36%–1.30%), 3.17% (95% CI: 1.47%–4.90%), and 8.90% (95% CI: 6.09%–11.79%), respectively. The effect was stronger in females than males, and stronger in the elderly (≥65 years) than among the young. The interaction between low temperatures and high air pollution levels significantly increased the number of asthma outpatient visits. This study emphasizesthe importance of reducing air pollution in order to lessen the effects of cold.
Acknowledgment
The authors would like to thank all the reviewers who participated in the review, as well as the Inner Mongolia People’s Hospital, the Inner Mongolia Autonomous Region Health Committee Foundation Group, and Inner Mongolia Medical University for the “Zhiyuan Talents” project, and MJ Editor (www.mjeditor.com) for providing English editing services during the preparation of this manuscript.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Supplementary materials
Supplemental data for this article can be accessed online at https://doi.org/10.1080/09603123.2022.2136364.