A Substance Use Treatment Programme for Mentally Ill Forensic Patients in an Australian Setting: A Pilot Study of Feasibility, Acceptability and Preliminary Efficacy

This study aims to evaluate the feasibility, acceptability and preliminary efficacy of an Australian-adapted Substance Use Treatment Programme (SUTP) among mentally ill offenders in an Australian secure forensic setting. A single-group non-controlled pilot trial was conducted. Four SUTP treatment groups were run simultaneously ( n = 39) with sessions held weekly over 12 weeks. Feasibility was assessed by examining attrition, study retention and motivation for treatment, and measures of therapeutic alliance, client satisfaction and qualitative interviews were used to determine acceptability. Preliminary efficacy was assessed using self-report questionnaires implemented at baseline and post-intervention measuring drug related locus of control, confidence to resist substances in the future and beliefs about substance use. Low attrition, high levels of satisfaction and moderately positive levels of therapeutic alliance were found. Participants also demonstrated a significant shift towards an internal drug related locus of control upon completion of SUTP. SUTP is a promising intervention for mentally ill offenders with a history of substance use in Australian forensic services. A randomised controlled trial is warranted to rigorously evaluate the efficacy of SUTP in this setting.