Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Proportion of people with PTSD
Systematic review	286 people 5 RCTs in this analysis	Proportion of people with a diagnosis of PTSD 59/136 (43%) with trauma-focused CBT 88/150 (59%) with supportive psychotherapy, psychodynamic psychotherapy, and hypnotherapy (combined analysis)	RR 0.71 95% CI 0.56 to 0.89	Small effect size	trauma-focused CBT