The effectiveness and tolerability of trauma-focused psychotherapies for psychotic symptoms: A systematic review of trauma-focused psychotherapies.

"CONFLICT OF INTEREST STATEMENT The authors have declared that there are no conflicts of interest in relation to the subject of this study."

"Dr Bloomfield was supported by a UKRI Future Leaders Fellowship (MR/V025945/1), a BMA Foundation for Medical Research Margaret Temple Award for Schizophrenia Research and a UCL Excellence Fellowship."

"We pre‐registered our review with PROSPERO (CRD42020202135). We followed the preferred reporting items for systematic reviews and meta‐analysis guidelines (PRISMA) (Moher et al., ). We included any study of the efficacy of a TFPT with a quantitative outcome measure for psychotic symptoms. We defined TFPTs as any psychological intervention from any modality of psychotherapy that had an explicit focus on past traumatic memories and/or was described as ‘trauma‐focused’. We distinguished between TFCBT that would be in‐line with the principles of Ehlers & Clark () by facilitating memory reprocessing through exposure, and trauma‐informed CBT (TICBT) that did not include exposure. Interventions could be delivered in any setting in a group or individual format. We defined psychotic symptoms as hallucinations, delusions and/or paranoia."