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. 2002 Jul 22;2002(3):CD001117. doi: 10.1002/14651858.CD001117

Bailey 1999.

Methods DESIGN: Randomised controlled trial of two interventions. 
 METHOD OF RANDOMISATION: Stratified by severity and blocked to ensure 2 of every 6 participants were assigned in each group 
 MEANS OF ALLOCATION CONCEALMENT‐ Closed envelope technique 
 OUTCOME ASSESSOR BLINDING‐ Blinded 
 WITHDRAWAL/DROPOUTS‐ 7% attrition rate. All participants not accounted for.
Participants Eligible: Not stated 
 Randomised: 236 
 Completed: 221 
 Age: Mean: not stated 
 Range: 94 (41%) < 40 yrs, 138 (59%) >= 40 yrs 
 Sex: Male/Female: 71 / 161 
 Asthma Diagnosis: Doctor diagnosis and objective lung function. 
 Recruitment: Pulmonary clinic visit 
 Diseases Included: Not stated. 
 Major Exclusions: Not stated. 
 Baseline: 
 FEV1: not reported 
 PEF: not reported 
 Exacerbations: moderate to severe asthmatics
Interventions Setting: Outpatients clinic 
 Type: Two self management interventions, one modified, and a usual care control group. 
 (1) Counselling re use of skill‐oriented self help work book including info on asthma physiology, medications, trigger avoidance detection, response to asthma attacks and inhaler technique. No individualised action plan. 
 (2) Instruction of use of a modified work book, inhaler technique and peak flow meter use. 
 (3) control group received usual care and some asthma literature. 
 Duration: 
 (a) One 1 hour individual session and 2 asthma support group meetings. 
 (b) One 15 minute individual session plus a 1 week follow‐up phone call and at 2 weeks a letter to encourage adherence.
Outcomes Medication & inhaler adherence, symptoms, respiratory illness, functional impairment & use of health care services.
Notes Jadad Score = 4
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Low risk Study investigators unaware as to order of treatment group assignment (Cochrane Grade A)