Effects of Fine Particulate Matter and Its Components on Emergency Room Visits for Pediatric Pneumonia: A Time-Stratified Case-Crossover Study

Ming-Ta Tsai, Yu-Ni Ho, Charng-Yen Chiang, Po-Chun Chuang, Hsiu-Yung Pan, I-Min Chiu, Chih-Min Tsai and Fu-Jen Cheng
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Ming-Ta Tsai: Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan
Yu-Ni Ho: Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan
Charng-Yen Chiang: Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan
Po-Chun Chuang: Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan
Hsiu-Yung Pan: Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan
I-Min Chiu: Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan
Chih-Min Tsai: College of Medicine, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City 333, Taiwan
Fu-Jen Cheng: Department of Emergency Medicine, Kaohsiung Chang Gung Memorial Hospital, No. 123, Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan

IJERPH, 2021, vol. 18, issue 20, 1-12

Abstract: Pneumonia, one of the important causes of death in children, may be induced or aggravated by particulate matter (PM). Limited research has examined the association between PM and its constituents and pediatric pneumonia-related emergency department (ED) visits. Measurements of PM 2.5 , PM 10 , and four PM 2.5 constituents, including elemental carbon (EC), organic carbon (OC), nitrate, and sulfate, were extracted from 2007 to 2010 from one core station and two satellite stations in Kaohsiung City, Taiwan. Furthermore, the medical records of patients under 17 years old who had visited the ED in a medical center and had a diagnosis of pneumonia were collected. We used a time-stratified, case-crossover study design to estimate the effect of PM. The single-pollutant model demonstrated interquartile range increase in PM 2.5 , PM 10 , nitrate, OC, and EC on lag 3, which increased the risk of pediatric pneumonia by 18.2% (95% confidence interval (Cl), 8.8–28.4%), 13.1% (95% CI, 5.1–21.7%), 29.7% (95% CI, 16.4–44.5%), 16.8% (95% CI, 4.6–30.4%), and 14.4% (95% Cl, 6.5–22.9%), respectively. After PM 2.5 , PM 10 , and OC were adjusted for, nitrate and EC remained significant in two-pollutant models. Subgroup analyses revealed that nitrate had a greater effect on children during the warm season (April to September, interaction p = 0.035). In conclusion, pediatric pneumonia ED visit was related to PM 2.5 and its constituents. Moreover, PM 2.5 constituents, nitrate and EC, were more closely associated with ED visits for pediatric pneumonia, and children seemed to be more susceptible to nitrate during the warm season.

Keywords: particulate matter; particulate matter component; air pollution; pediatric; pneumonia (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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