Figure 1.

Study design. Patients were categorized as persistently high, intermittently high, or never high based on blood eosinophil counts (BECs) from the first asthma diagnosis to the index date. The index date was the date of the last BEC with at least 12 months’ outcome data and without prescriptions for oral corticosteroids or anti-interleukin-5 therapy in the prior 4 weeks. The baseline and outcome years were 1 year prior to and 1 year after the index date.

Abbreviation: HCRU, health care resource utilization.