Shared treatment decision-making and empowerment-related outcomes in psychosis: systematic review and meta-analysis.

Background: In the UK almost 60% of people with a diagnosis of schizophrenia who use mental health services say they are not involved in decisions about their treatment. Guidelines and policy documents recommend that shared decision-making should be implemented, yet whether it leads to greater treatment-related empowerment for this group has not been systematically assessed.

Aims: To examine the effects of shared decision-making on indices of treatment-related empowerment of people with psychosis.