Although data on the prevalence of current asthma among adults and children are available at national, regional, and state levels, such data are limited at the substate level (eg, urban–rural classification and county).
We examined the prevalence of current asthma in adults and children across 6 levels of urban–rural classification in each state. We estimated current asthma prevalence among adults for urban–rural categories in the 50 states and the District of Columbia and among children for urban–rural categories in 27 states by analyzing 2016-2018 Behavioral Risk Factor Surveillance System survey data. We used the 2013 National Center for Health Statistics 6-level urban–rural classification scheme to define urban–rural status of counties.
During 2016-2018, the current asthma prevalence among US adults in medium metropolitan (9.5%), small metropolitan (9.5%), micropolitan (10.0%), and noncore (9.6%) areas was higher than the asthma prevalence in large central metropolitan (8.6%) and large fringe metropolitan (8.7%) areas. Current asthma prevalence in adults differed significantly among the 6 levels of urban–rural categories in 19 states. In addition, the prevalence of current asthma in adults was significantly higher in the Northeast (9.9%) than in the South (8.7%) and the West (8.8%). The current asthma prevalence in children differed significantly by urban–rural categories in 7 of 27 states. For these 7 states, the prevalence of asthma in children was higher in large central metropolitan areas than in micropolitan or noncore areas, except for Oregon, in which the prevalence in the large central metropolitan area was the lowest.
Knowledge about county-level current asthma prevalence in adults and children may aid state and local policy makers and public health officers in establishing effective asthma control programs and targeted resource allocation.
Citation: Qin, Xiaoting, Cynthia A. Pate, and Hatice S. Zahran. “Adult asthma prevalence and trend analysis by urban–rural status across sociodemographic characteristics—United States, 2012-20.” Journal of Allergy and Clinical Immunology: Global 2, no. 2 (2023): 100085.
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