Schnurr 2007.

Methods	Randomised controlled trial
Participants	284 female veterans and active duty personnel in the USA
Interventions	10 weekly 90‐minute sessions of prolonged exposure (n = 141) vs 10 weekly 90‐minute sessions of present‐centred therapy (n = 143)
Outcomes	CAPS, SF36, SSAI, BDI, ASI, PTSD checklist
Notes	Experienced therapists delivered therapy, and treatment adherence was assessed.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "Verified eligible participants were randomised within each site to prolonged exposure or present‐centred therapy using permuted blocks with random block sizes of 4 or 6. All study data were stored at the study coordinating center." Comment: The method of random sequence generation was not reported.
Allocation concealment (selection bias)	Unclear risk	Comment: There is no mention of any measures taken to conceal allocation.
Incomplete outcome data (attrition bias) All outcomes	Low risk	Quote: "Primary analyses were performed on the intention‐to‐treat sample, using data from all randomised participants." Reasons for drop‐out were fully reported (21 from PE and 17 from PCT).
Selective reporting (reporting bias)	Low risk	Comment: All specified outcomes were reported.
Other bias	Low risk	Comment: No other sources of bias detected.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Comment: Participants were aware of their allocation.
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Quote: "Blinded assessors collected data before and after treatment and at 3‐ and 6‐month follow‐up."