Rental housing may contribute to racial and ethnic disparities in upper respiratory infections
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Objective
Upper respiratory infections (URI) are the major trigger of asthma exacerbations in children with asthma and are more likely to be reported by Black and Mexican American children compared to White children in the US. We aimed to evaluate the extent to which obesity, nicotine exposure, household size, and socioeconomic status (SES) explained this excess URI risk among all children and among children with asthma.
Study Design
Data collected on children aged 6-17 years from the National Health and Nutritional Examination Survey (2007-2012) were analyzed using survey weights and a mediation approach. Household SES was analyzed as a cumulative score reflecting income poverty ratio, education, and rental housing. URI was defined as cough, cold, phlegm, runny nose, or other respiratory illness (excluding hay fever and allergies) in the past 7 days.
Results
Obesity and serum cotinine, a marker of nicotine exposure, explained little to none of the excess risk of URI while SES explained 36.4% (95% CI=34.1-38.6) in Black and 28.5% (95% CI=26.7-30.5) in Mexican American children. Living in rental housing and income poverty ratio<2, explained half (49.6%, 95% CI=46.9-52.3) and 20% (19.7%, 95% CI=18.9-20.5) of the excess URI risk among Black children, respectively. In Mexican American children, rental housing and low educational attainment each explained approximately 15-17% of the excess URI risk. Results were comparable among children with asthma.
Conclusions
Markers of poverty, such as rental housing, contributed substantially to the excess risk of URI among Black and Mexican American children, including among those with asthma.
