Key Findings:  This study utilized case managers' assessments and standardized instruments to analyze 233 South London community mental health patients with serious mental illness and comorbid substance abuse, finding no significant differences in inpatient service usage or self-harm among subgroups defined by substance type, but identified higher rates of violence among stimulant users compared to those using alcohol or cannabis alone or in combination.
Type of Study:  Clinical Trial
Study Sample Size:  233
Study Result:  Negative
Research Location(s):  United Kingdom
Year of Pub:  2003
Cannabinoids Studied: 
Phytocannabinoid Source:  Not Applicable
Citation:  Miles H, et al. Characteristics of subgroups of individuals with psychotic illness and a comorbid substance use disorder. Psychiatr Serv. 2003; 54:554-61. doi: 10.1176/appi.ps.54.4.554
Authors:  Miles H, Johnson S, Amponsah-Afuwape S, Finch E, Leese M, Thornicroft G