Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
RCT 3-armed trial	74 women with PTSD related to childhood sexual abuse	Proportion of people withdrawing (no details given on reasons for withdrawal) 12/29 (41%) with CBT (14 sessions lasting 90–120 minutes) 2/22 (9%) with present-centred therapy (14 sessions lasting 90–120 minutes)	Significance not assessed
RCT	284 women with PTSD; 277 veterans and 7 active-service personnel	Proportion of people withdrawing (no details given on reasons for withdrawal) 53/141 (38%) with CBT (10 weekly sessions of prolonged exposure lasting 90 minutes) 30/143 (21%) with present-centred therapy (10 weekly sessions lasting 90 minutes)	P = 0.002	Effect size not calculated	present-centred therapy