The Study of Trauma and Recovery (STAR)

An NIHR-funded multi-site randomised controlled trial to evaluate if TF-CBTp is safe, acceptable, and effective for trauma survivors with distressing psychosis

What did the STAR trial investigate?

The primary research question was:

  • Does TF-CBTp reduce PTSD symptoms (at the end of therapy) in people with distressing psychosis and PTSD symptoms?​

The secondary research questions were:

  • Does TF-CBTp reduce psychosis symptoms, distress and functioning problems?​

  • Is this therapy acceptable to participants and to therapists?

  • Do the effects last?​

  • Is it cost effective?​

What happened in the STAR trial?

Who participated?

  • People who were at least 18 years old and who met diagnostic criteria for Post-traumatic Stress Disorder and were experiencing distressing psychosis.

What was the design?

  • Participants were allocated randomly to either Trauma-Focused Cognitive Behaviour Therapy for psychosis (TF-CBTp) + usual treatment, or usual treatment alone.

  • Therapy lasted nine months with a trained therapist.

  • Following a baseline assessment, all participants were followed up at 4, 9 and 24 months.