A Proposal for an Evaluation Study of a Positive Psychotherapy Group Intervention of people with psychosis: A Randomized Controlled Trial.

A total of 154 participants have been recruited. They were randomized to either intervention or control group. The Consort Diagram of the study was illustrated. Homogeneity was proven between intervention group and control group at the baseline on possible confounding factors, i.e. their demographic factors. Attrition rate in the intervention group was 11.5% whilst that in control group was 18.4%. Intention-to-treat analysis was adopted. Within-group analysis showed that after intervention, there was significant improvement on outcomes measured as compared to the baseline, i.e. Wellbeing (p<.0001), Hopes (p<.0001), Self-efficacy (p<.0001), Health outcomes (p<.0001), and Symptoms (p<.0001) with Cohen’s d effect size (ES) ranging from .18 to .40. When compared to control, intervention group showed better outcomes in Wellbeing (p<.0001; ES=.61), Agency Subscale of Hope (p= .03, ES=.36) and Self-efficacy (p<.0001, ES=.58).When compared to control, intervention group showed better outcomes in Wellbeing (p<.0001; ES=.61), Agency Subscale of Hope (p= .03, ES=.36) and Self-efficacy (p<.0001, ES=.58). WELLFOCUS Positive Psychotherapy was proven to be an effective treatment in improving the wellbeing and other mental health outcomes for people with psychosis. It could be implemented as one of the intervention in local mental health service to promote recovery.