In a blinded study, Bousquet and colleagues also failed to find a significant difference between budesonide/formoterol SMART
therapy and constant dose fluticasone/salmeterol therapy in their primary outcome variable, time to first severe exacerbation
and multiple secondary outcomes including reliever use, percentage of reliever-free days, asthma symptom scores,
percentage of symptom-free days, nocturnal awakenings, asthma control days, ACQ-5 and morning and evening PEF.1