The researchers conducted a retrospective cohort study using claims data from the Optum Research Database for 538 patients at least 6 years of age who initiated mepolizumab treatment for asthma between January 2016 and December 2019.
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Investigators assessed the annualized asthma exacerbation rate (AAER) and the annualized rate of asthma exacerbations requiring hospitalization over 52 weeks.