Combination Short-Acting BroNchodilator and Inhaled Corticosteroid Rescue Therapy on Health Outcomes in Routine Care

This study will primarily compare rates of asthma exacerbation during 12-month pre-switch period and 12-month post switch period among participants with asthma needing a rescue therapy. Other outcomes of interest for comparison between the pre- and post-switch periods include asthma-related oral corticosteroids (OCS) use, asthma exacerbation-related hospitalizations, emergency department (ED) visits, urgent care visits, outpatient visits, telehealth visits, and asthma-related and asthma exacerbation-related healthcare costs. The use of asthma control and rescue medications will be collected to understand treatment patterns in the real-world US context.