Effectiveness in routine care: trauma-focused treatment for PTSD

<b>Objective</b>: The efficacy of trauma-focused cognitive behaviour therapy (tf-CBT) has been well established in randomized controlled trials (RCTs). More research is needed to demonstrate the effectiveness of tf-CBT in routine clinical care settings.<b>Method</b>: Eighty-five patients (68 female) with a primary diagnosis of PTSD received tf-CBT at two German outpatient centres (Münster and Mannheim) between 2014 and 2016. Treatment was delivered mainly by therapists in training and treatment duration was based on symptom course. The treatment consisted of a preparation phase, a trauma-focused phase (comprising imaginal exposure, discrimination training, changing dysfunctional appraisals) and a phase of reclaiming-your-life assignments, and relapse prevention. In an intent-to-treat-analysis (ITT), linear mixed effects models were fitted for self-assessments of traumatic symptom severity using the PTSD Checklist for DSM-5 (PCL-5) and the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5). Potential moderators for treatment outcome, e.g. number of suicide attempts, were investigated.<b>Results</b>: The observed treatment effect was large for both the CAPS-5 (ITT: Cohen's <i>d</i> = 2.07, CI [1.62, 2.51]; completers <i>d</i> = 2.34, CI [1.84, 2.83]) and PCL-5 respectively (ITT: <i>d</i> = 2.02, CI [1.56, 2.48]; completers <i>d</i> = 2.15, CI [1.66, 2.64]), and remained stable six months and one-year post-treatment. <i>N</i> = 27 patients (31.48%) were defined as study dropout and of these, <i>n</i> = 12 (14.12%) dropped out of the study but completed treatment. None of the fixed-effect estimates for treatment predictors interacted significantly with the effect of time.<b>Conclusions</b>: Tf-CBT is well-tolerated and it can be effectively delivered in routine clinical care. Its large treatment effects underline the practicability and benefits of the approach. This trial demonstrates its broad applicability among individuals with diverse patterns of clinical characteristics and comorbidities.