Lost to treatment · people with both severe mental illness and substance misuse
It is very uncertain whether motivational interviewing changes lost to treatment compared with standard care (very low certainty).
1 finding from 1 review
Death · people with both severe mental illness and substance misuse
It is very uncertain whether motivational interviewing changes death compared with standard care (very low certainty).
1 finding from 1 review
Alcohol use Not abstaining from alcohol · people with both severe mental illness and substance misuse
It is very uncertain whether motivational interviewing changes alcohol use Not abstaining from alcohol compared with standard care (very low certainty).
1 finding from 1 review
Drug (non‐alcohol) use Polydrug consumption levels measured by Opiate Treatment Index (OT) · people with both severe mental illness and substance misuse
1 finding from 1 review
Mental state · people with both severe mental illness and substance misuse
1 finding from 1 review
Global Assessment of Functioning ‐ not measured · people with both severe mental illness and substance misuse
1 finding from 1 review
Quality of life/life satisfaction ‐ not measured · people with both severe mental illness and substance misuse
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Lost to treatment · people with both severe mental illness and substance misuse
Cognitive behavioural therapy + motivational interviewing showed no clear difference in leaving the study early: Lost to treatment compared with standard care (low certainty).
1 finding from 1 review
Adverse event: Death · people with both severe mental illness and substance misuse
Cognitive behavioural therapy + motivational interviewing showed no clear difference in adverse event: Death compared with standard care (low certainty).
1 finding from 1 review
Alcohol use Estimated daily consumption in previous month · people with both severe mental illness and substance misuse
1 finding from 1 review
Drug (non‐alcohol) use Polydrug consumption levels measured by Opiate Treatment Index (OT) · people with both severe mental illness and substance misuse
1 finding from 1 review
Relapse · people with both severe mental illness and substance misuse
It is very uncertain whether cognitive behavioural therapy + motivational interviewing changes relapse:* Relapse at 3 months after 9 months of treatment compared with standard care (very low certainty).
1 finding from 1 review
Global state: average score(GAF scale of 1 ‐ 100) · people with both severe mental illness and substance misuse
1 finding from 1 review
Quality of life / life satisfaction: Brief Quality of Life Scale · people with both severe mental illness and substance misuse
1 finding from 1 review