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

Allen 1995.

Methods DESIGN: Randomised controlled trial stratified according to peak flow ownership. 
 METHOD OF RANDOMISATION: Randomised ‐ stated. Method not described. 
 MEANS OF ALLOCATION CONCEALMENT‐ blinded. 
 OUTCOME ASSESSOR BLINDING ‐ not stated. 
 WITHDRAWAL/DROPOUTS ‐ all participants accounted for.
Participants Eligible: 116 
 Randomised: 58/58 
 Completed: 56/57 
 Age: Mean: 40 yrs Range: 19 to 63 
 Sex: Male / Female 46%/54% 
 Asthma Diagnosis: Doctors Diagnosis 
 Recruitment: volunteer community respondents 
 Diseases Included: Asthma ‐ moderate to severe 
 Major exclusions: Current smokers or quit in the past 3 months, previous asthma education programme. 
 Baseline: 
 FEV1: Intervention n = 56. 16% normal (> or = 80%), 77% mild/moderate (50 to 79%), 7% severe (< 50%). Control n = 57. 10% normal, 78% mild/mod, 12% severe. 
 PEF: Intervention n = 54. median 58.4, range 35.0 to 77.0. Control n = 26. median 48.3, range 37 to 75. 
 Exacerbations ‐ not stated.
Interventions Setting: Hospital Based community service asthma education programme 
 Type: Education, Self Monitoring of Peak Flow and External Regular Review. (diaries of medications and symptoms were kept by members of both groups for 4 week periods at 3, 6, 9 and 12 months. If control group members owned a PF, they recorded this also. All members of the intervention group recorded PF and were taught in its use and interpretation). 
 Duration: weekly 2.5 hour group education sessions over 4 weeks (total 10 hrs)
Outcomes Knowledge, Compliance, scheduled and unscheduled doctor and hospital visits, disrupted days (ie being confined to bed or a chair), Frequency of morning wheeze, nocturnal asthma symptoms, bronchodilator medications, pre‐bronchodilator FEV1/FVC, asthma symptoms diary, PEF.
Notes  
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)