Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Remission/abstinence
RCT	81 people meeting DSM-IV criteria for bulimia nervosa	Abstinence from binge eating at the end of treatment 7% with guided self-help CBT 12% with CBT for bulimia nervosa (CBT-BN) Absolute numbers not reported	RR 1.05 95% CI 0.91 to 1.22		Not significant
RCT	81 people meeting DSM-IV criteria for bulimia nervosa	Abstinence from binge eating at 1 year 9% with guided self-help CBT 15% with CBT-BN Absolute numbers not reported	RR 1.05 95% CI 0.74 to 1.12		Not significant
RCT	62 people with DSM-III-R bulimia nervosa	Remission rate of binge vomiting at 16 weeks 55% with 16 weekly sessions of CBT-BN 13% with 8 fortnightly sessions of guided self-help CBT Absolute numbers not reported	P value not reported
RCT	62 people with DSM-III-R bulimia nervosa	Remission of binge vomiting mean follow-up of 43 weeks from the end of treatment 71% with 16 weekly sessions of CBT-BN 61% with 8 fortnightly sessions of guided self-help CBT Absolute numbers not reported	ARR +10% 95% CI –17% to +37%		Not significant
RCT	62 people with DSM-III-R bulimia nervosa Further report of reference	Remission at 4 years 62% with CBT-BN 67% with guided self-help Absolute numbers not reported	P value not reported