Assessment of Consistency of Fixed Airflow Obstruction Status during Budesonide/Formoterol Treatment and Its Effects on Treatment Outcomes in Patients with Asthma

Approximately one third of patients with moderate-to-severe asthma in this study had inconsistent FAO, and their treatment responses were most similar to patients with FAO+. Regardless of FAO status, patients treated with BUD/FM experienced the most improved treatment responses and fewest withdrawals due to PAEs.