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Funded by the National Institute for Health Research and Medical Research Council’s Efficacy and Mechanism Evaluation programme.

This trial was an evaluation of a Cognitive Behavioural Therapy (CBT) intervention for worry for individuals with persecutory delusions within the context of a diagnosis of psychosis. The trial was funded by the Medical Research Council and the National Institute for Health Research. 


Effects of cognitive behaviour therapy for worry on persecutory delusions in patients with psychosis (WIT): a parallel, single-blind, randomised controlled trial with a mediation analysis