Table 1 PICO framework

P

Population

People exiting homelessness

People with mental illness and/or who use substances

I

Intervention

PSH with onsite or offsite supports for single adults

Alignment with a Housing First approach was not required

Single room occupancy models were included if they offered some form of supportive services

C

Comparison

Not applicable

O

Outcome

Primary research question: approaches to managing high-risk behaviours and challenges used by service providers; service providers’ experiences in supporting residents with high-risk behaviours and challenges; residents’ experiences of high-risk behaviours and challenges in PSH

Secondary research question: housing retention and loss; returns to homelessness; death