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Open AccessArticle

Association between Ambient Air Pollution and Hospital Length of Stay among Children with Asthma in South Texas

1
Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, TX 77843, USA
2
Center for Outcomes Research, Houston Methodist Research Institute, Houston, TX 77030, USA
3
Center for Health and Nature, Houston Methodist Research Institute, Houston, TX 77030, USA
4
Department of Health Policy and Management, School of Public Health, Texas A&M University, College Station, TX 77843, USA
5
Department of Epidemiology and Biostatistics, School of Public Health, Texas A&M University, College Station, TX 77843, USA
6
Department of Pediatric Pulmonology, Driscoll Children’s Hospital, Corpus Christi, TX 78411, USA
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(11), 3812; https://doi.org/10.3390/ijerph17113812
Received: 24 April 2020 / Revised: 22 May 2020 / Accepted: 23 May 2020 / Published: 27 May 2020
(This article belongs to the Section Children's Health)
Although hospital length of stay (LOS) has been identified as a proxy measure of healthcare expenditures in the United States, there are limited studies investigating the potentially important association between outdoor air pollution and LOS for pediatric asthma. This study aims to examine the effect of ambient air pollution on LOS among children with asthma in South Texas. It included retrospective data on 711 children aged 5–18 years old admitted for asthma to a pediatric tertiary care hospital in South Texas between 2010 and 2014. Air pollution data including particulate matter (PM2.5) and ozone were collected from the U.S. Centers for Disease Control and Prevention. The multivariate binomial logistic regression analyses were performed to determine the association between each air pollutant and LOS, controlling for confounders. The regression models showed the increased ozone level was significantly associated with prolonged LOS in the single- and two-pollutant models (p < 0.05). Furthermore, in the age-stratified models, PM2.5 was positively associated with LOS among children aged 5–11 years old (p < 0.05). In conclusion, this study revealed a concerning association between ambient air pollution and LOS for pediatric asthma in South Texas. View Full-Text
Keywords: ambient air pollution; hospital length of stay; PM2.5; ozone; pediatric asthma; South Texas ambient air pollution; hospital length of stay; PM2.5; ozone; pediatric asthma; South Texas
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Baek, J.; Kash, B.A.; Xu, X.; Benden, M.; Roberts, J.; Carrillo, G. Association between Ambient Air Pollution and Hospital Length of Stay among Children with Asthma in South Texas. Int. J. Environ. Res. Public Health 2020, 17, 3812.

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