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The association between air pollution and childhood asthma: United States, 2010–2015
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10 2022
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Source: J Asthma. 59(10):2069-2080
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Alternative Title:J Asthma
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Description:Objective:
The current population-based study examines the association between county-level ambient air pollution and childhood asthma.
Methods:
Data from the nationally representative 2010–2015 National Health Interview Survey were linked to nationwide fine particulate matter (PM2.5) air pollution data at the county-level from the National Environmental Public Health Tracking Network which utilizes air quality monitoring stations and modeled PM2.5 measurements (Downscaler model data) and adjusted by county-level socioeconomic characteristics data from the 2010–2015 American Community Survey. Multilevel modeling techniques were used to assess the association between PM2.5 annual concentrations (quartiles < 8.11, 8.11–9.50, 9.51–10.59, ≥ 10.60 μg/m3) and current childhood asthma along with two asthma outcomes (episode in the past year, emergency room (ER) visit due to asthma).
Results:
From 2010–2015, there were significant declines in PM2.5 concentrations and asthma outcomes. In unadjusted models, children living in areas with higher PM2.5 concentrations were more likely to have current asthma, ≥1 asthma episode in the past year, and ≥1 ER visit due to asthma compared with children living in areas with the lowest quartile (< 8.11 μg/m3). After adjusting for characteristics at the county, geographic, and child and family-level, significant associations remained for asthma episode, and ER visit among children living in areas with PM2.5 annual concentrations between 9.51–10.59 μg/m3 (3rd quartile) compared with children living in areas with the lowest quartile.
Conclusions:
This study adds to the limited literature by incorporating nationally representative county-, child-, and family-level data to provide a multi-level analysis of the associations between air pollution and childhood asthma in the U.S.
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Pubmed ID:34587862
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Pubmed Central ID:PMC9148369
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Volume:59
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Issue:10
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