Summary of findings 2. Peer support plus standard care versus clinician‐led support plus standard care for people with schizophrenia or similar serious mental illness.

Peer support + standard care vs clinician‐led support + standard care for people with schizophrenia or similar serious mental illness
Patient or population: people with schizophrenia or other serious mental illness Settings: inpatients and outpatients Intervention: peer support + standard care vs clinician‐led support + standard care
Outcomes	Illustrative comparative risks* (95% CI)		Relative effect (95% CI)	No of participants (studies)	Quality of the evidence (GRADE)	Comments
	Assumed risk	Corresponding risk
	Control	Peer support vsclinician‐led support
Service use: hospital admission	Data not available for this outcome
Service use: days in hospital	Data not available for this outcome
Global state: relapse	Data not available for this outcome
Global state: clinically important change in global state	Data not available for this outcome
Peer outcomes: clinically important change in quality of life for service user and peer supporter	Data not available for this outcome
Adverse events: all cause	Data not available for this outcome
Economic: indirect costs (cost to society)	Data not available for this outcome
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CI: confidence interval.
GRADE Working Group grades of evidence High quality: further research is very unlikely to change our confidence in the estimate of effect. Moderate quality: further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low quality: further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low quality: we are very uncertain about the estimate.