Feasibility and outcomes of a trauma-informed model of care in residential treatment for substance use

History of trauma and PTSD are both common among individuals with substance use disorder (SUD) and associated with poorer SUD treatment retention and outcomes. Recommended trauma-informed care (TIC) approaches in SUD treatment have been underutilized in residential substance use treatment services. This study conducted a single-armed, phase 1 feasibility and outcomes trial for a novel TIC model developed and delivered in a young adult (18–35 years) residential substance use treatment service in Australia. Measures of client acceptability, staff acceptability, and treatment fidelity assessed feasibility. The study collected client substance use (global substance use and alcohol, methamphetamine, and cannabis use involvement) and mental health outcomes (depression, anxiety, and PTSD symptoms) at service entry, and 3, 6, and 12 months later. Staff professional quality of life, and perceptions and confidence in delivering TIC were collected at baseline (prior to staff training in TIC), and at 3, 6, 12 and 18 months following training in the model. The program was delivered as per the TIC model approximately 88 % of the time, where 48 % of clients completed the full 6-week treatment program. Mixed effect models showed significant reductions in substance involvement, particularly for substance use at 3 months (d = 0.67). Improvements in depression, anxiety, and PTSD were also found (ps