Abstract
Background: The discriminatory and racist policy of historical redlining in the United States during the 1930s played a role in perpetuating contemporary environmental health disparities. Objective: Our objectives were to determine associations between home and school pollutant exposure (fine particulate matter [PM2.5], NO2) and respiratory outcomes (Composite Asthma Severity Index, lung function) among school-aged children with asthma and examine whether associations differed between children who resided and/or attended school in historically redlined compared to non-redlined neighborhoods. Methods: Children ages 6 to 17 with moderate-to-severe asthma (N = 240) from 9 US cities were included. Combined home and school exposure to PM2.5 and NO2 was calculated based on geospatially assessed monthly averaged outdoor pollutant concentrations. Repeated measures of Composite Asthma Severity Index and lung function were collected. Results: Overall, 37.5% of children resided and/or attended schools in historically redlined neighborhoods. Children in historically redlined neighborhoods had greater exposure to NO2 (median: 15.4 vs 12.1 parts per billion) and closer distance to a highway (median: 0.86 vs 1.23 km), compared to those in non-redlined neighborhoods (P < .01). Overall, PM2.5 was not associated with asthma severity or lung function. However, among children in redlined neighborhoods, higher PM2.5 was associated with worse asthma severity (P < .005). No association was observed between pollutants and lung function or asthma severity among children in non-redlined neighborhoods (P > .005). Conclusions: Our findings highlight the significance of historical redlining and current environmental health disparities among school-aged children with asthma, specifically, the environmental injustice of PM2.5 exposure and its associations with respiratory health.
Original language | English (US) |
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Pages (from-to) | 1159-1168 |
Number of pages | 10 |
Journal | Journal of Allergy and Clinical Immunology |
Volume | 154 |
Issue number | 5 |
DOIs | |
State | Published - Nov 2024 |
Funding
Supported by the National Institutes of Health (NIH-K01HL140216), Robert Wood Johnson Foundation, and Amos Medical Faculty Development Award. This project has been funded in whole or in part with federal funds from the National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), National Center for Advancing Translational Sciences (NCATS), and Department of Health and Human Services under contract numbers 1UM1AI114271-01, UM2AI117870, 5UM1AI114271, NCATS/NIH UL1TR001079, NCATS/NIH 1UL1TR001430, NCATS/NIH UL1TR001873, NCATS/NIH UL1TR002345, UL1TRG01422, NIH/NCATS Colorado CTSA UL1 TR002535, NCATS/NIH UL1TR001876, and NIH/CTSA 5UL1TR001425-03.
Keywords
- Home environment
- asthma disparities
- asthma severity
- combined home and school exposure
- composite asthma severity index
- lung function
- school environment
- traffic-related air pollution
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology