Methods	Design: 3‐arm quasi experimental trial
	Setting: Bronx, New York city, United States
	Follow up: 18‐months
Participants	Population: Homeless individuals, long‐term psychiatric inpatients, and heavy users of emergency services with serious and persistent mental illness
	Sample size: Total sample size n = 104, ICM‐peer n = 36, ICM‐para n = 36, ICM‐only n = 32
Interventions	Intervention:
	ICM‐peer: Three consumer peer specialists were added to one unit, received 8 week of case management training before assignment and additional training in peer counselling and self‐help.
	ICM‐para: 3 Bronx residents with no previous experience as mental mental health consumers or provided were added to a second unit as para‐professional and received 8 weeks of case management training before assignment
	Comparator:
	ICM‐Only: Key program features include small caseload(roughly 10 clients/worker), 24 hr availability of staff, a rehabilitation orientation, and assertive outreach and advocacy
Outcomes	Quality of life, Mental health
Notes