The effects of peer-delivered interventions on clinical and psychosocial outcomes for people with serious mental illness and depression were evaluated through the use of superiority trials (Peer-delivered interventions and psychiatric care vs. psychiatric care only) and equivalence trials (peer-delivered interventions vs. mental health professional delivered interventions). Systematic review and meta-analysis showed that peer-delivered intervention positively influenced the clinical and psychosocial outcomes of patients with serious mental illness, but had no effect on patients with depression. Additionally, patients who engaged in peer-delivered interventions were no better or worse off than their counterparts who met with professionals in equivalence trials.
Fuhr, D., Salisbury, T. T., De Silva, M., Atif, N., van Ginneken, N., Rahman, A., & Patel, V. (2014). Effectiveness of peer-delivered interventions for severe mental illness and depression on clinical and psychosocial outcomes: A systematic review and meta-analysis. Social Psychiatry and Psychiatry Epidemiology, 49, 1691-1702. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4167169/
