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The asthma medication ratio (AMR), measuring the proportion of all asthma medication prescription fills (controller and rescue) that are controller medication fills, has been associated with individual healthcare utilization and quality of life. An AMR closer to 1 presumes better asthma control.
Investigators in Cincinnati assessed community-level asthma control by calculating pharmacy-level AMRs in 27 pharmacies, using data on >35,000 asthma medication prescriptions filled for children aged 2 to 17 years with persistent asthma. For each pharmacy's local census tract, investigators determined the rate of healthcare utilization (emergency department [ED] visit or hospitalization at a nearby academic children's hospital) for asthma among child…