Cowie 2002.

Methods	STUDY DESIGN: Parallel group randomised controlled trial LOCATION, NUMBER OF CENTRES: Canada, ED records from hospitals in Alberta DURATION OF STUDY: 12 months No blinding of outcome assessor
Participants	N SCREENED: 254 N RANDOMISED: 130 (of which 93 attended initial assessment); 3‐month data reported for 79 participants (intervention: 32; control: 47) N COMPLETED: 62 M = 18 F = 44 MEAN AGE: 17 years BASELINE DETAILS: ICS use: 75%; mean SABA use per day: 4 puffs; FEV1 predicted: 81% INCLUSION CRITERIA: 15 to 20 years; attendance at ED with asthma; EXCLUSION CRITERIA: Not reported
Interventions	EDUCATION GROUP: YAAP ‐ Young Adult Asthma Programme (one‐off visit to central site where therapists assessed inhaler device technique, information provided on asthma, emphasis on ICS & bronchodilators; exposure to risk factors +/‐ action plan Setting: Community CONTROL GROUP: Control: basic advice on inhaler technique delivered at some site as intervention but scheduled at different times TREATMENT PERIOD: 90 to 120 minute session FOLLOW‐UP PERIOD: 12 months
Outcomes	ED use; hospital admission; use of maintenance therapy; quality of life; withdrawal
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	Unclear risk	Computer‐generated randomisation schedule
Allocation concealment?	Low risk	Consecutively numbered sealed envelopes
Incomplete outcome data addressed? All outcomes	High risk	Available case