| Methods |
Randomised controlled trial |
| Participants |
47 veterans (37 men) with chronic PTSD in the USA |
| Interventions |
Mindfulness‐Based Stress Reduction (MBSR) (n = 25) group intervention vs TAU (n = 22) |
| Outcomes |
PCL, PHQ‐9, BADS, SF‐8, FFMQ |
| Notes |
Therapist credentials/experience is not reported. It is unclear whether or not treatment adherence was assessed. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Unclear risk |
Comment: The method of random sequence generation was not reported. |
| Allocation concealment (selection bias) |
Unclear risk |
Quote: "assessment subjects were randomized using concealed allocation to the intervention group" ‐ precise methods of allocation concealment were not reported. |
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
Comment: Reasons for leaving the study were fully reported, ITT analyses were performed. Appropriate methods of imputing data were used. 2 participants dropped out from the treatment group and 1 from the waitlist. |
| Selective reporting (reporting bias) |
Low risk |
Comment: All specified outcomes were reported. |
| Other bias |
High risk |
Comment: Therapist credentials/experience is not reported. It is unclear whether or not treatment adherence was assessed. |
| 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 |
Unclear risk |
There is no mention of the blinding of assessors. Measures were self report. |
