Comment: The quality of evidence is downgraded by study limitations (high or unclear risks of bias because of poor trial methods) and imprecise results (small sample sizes, low event rates and wide confidence intervals).
A Cochrane review [Abstract] 1 included 41 studies with 4024 participants. Different types of interventions were studied but no clear differences found between treatment and control groups for any important outcomes such as remaining in treatment, reduction in substance use or improving mental or global state in people with serious mental illnesses and substance misuse
Abstract and full text in Cochrane database http://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD001088.pub4/full, SOF table http://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD001088.pub4/full#CD001088-sec1-0001 (licence for full text and SOF table required)
Primary/Secondary Keywords