Treatment satisfaction and patient reported outcomes among people with opioid use disorder participating in an open-label, non-randomised trial of long-acting injectable buprenorphine treatment in Australian custodial settings.

Introduction: A trial of long-acting injectable buprenorphine (LAIB) in Australian prisons allowed examination of treatment satisfaction and patient-reported outcomes.
Methods: UNLOC-T was a 16-week non-randomised open-label study. Men and women aged ≥18 years with moderate/severe DSM-5 opioid use disorder currently serving a custodial sentence ≥6 months were recruited. Participants not in opioid agonist treatment (OAT) commenced LAIB (n = 67); those already stable on oral methadone treatment were recruited to a comparison arm (n = 62). The Treatment Satisfaction Questionnaire for Medication (TSQM), Patient Satisfaction Visual Analogue Scale (PS-VAS) and Treatment Burden Questionnaire assessed treatment satisfaction; the Kessler Psychological Distress Scale (K10), 12-Item Short Form Health Survey (SF-12) and the Australian Treatment Outcomes Profile (ATOP) measured mental health, physical health and quality of life.
Results: Among participants receiving LAIB, TSQM global satisfaction scores significantly increased from 68.2 (SD 16.6) to 77.0 (SD 18.4) by week 16 (p = 0.0041), as did satisfaction measured by the PS-VAS (62.5 [SD 29.2] vs. 79.4 [SD 25.5], p = 0.0005). Statistically significant improvements between baseline and week 16 were also observed for K10, SF-12 (total) and SF-12 (mental health) scores. By the end of the study, 'successful' treatment outcomes were observed in the ATOP domains of psychological health (84%), physical health (80%) and quality of life (86%).
Discussion and Conclusions: Participants inducted and stabilised on LAIB reported high treatment satisfaction and improved health and wellbeing. Results suggest LAIB is acceptable to people with opioid use disorder in custody, supporting scaleup of this medication to increase coverage of OAT in these settings.
Trial Registration: https://www.anzctr.org.au ACTRN12618000942257.
(© 2025 The Author(s). Drug and Alcohol Review published by John Wiley & Sons Australia, Ltd on behalf of Australasian Professional Society on Alcohol and other Drugs.)