Objectives
Primary objective
The primary objective of this study was to compare the efficacy of 2 inhalations of
Symbicort Turbuhaler 160/4.5 μg/inhalation twice daily plus Symbicort Turbuhaler
160/4.5 μg/inhalation as-needed with 1 inhalation of Seretide Diskus 50/500 μg/inhalation
twice daily plus terbutaline Turbuhaler 0.4 mg/inhalation as-needed in patients with
persistent asthma by evaluation of time to first severe asthma exacerbation as the primary
outcome variable.