The efficacy of 90-min versus 60-min sessions of prolonged exposure for PTSD: A randomized controlled trial in active-duty military personnel.

OBJECTIVE: Prolonged exposure (PE) therapy is a first-line posttraumatic stress disorder (PTSD) treatment, but the manualized 90-min session format constitutes a barrier to adopting PE in most settings because they use 60-min sessions for scheduling and billing. We examined whether 60-min PE sessions were as effective and efficient as 90-min PE sessions. METHOD: In total, 160 active-duty military personnel with PTSD were randomized to 8-15 sessions of 60- or 90-min PE sessions and assessed pre- and posttreatment, and 3- and 6-month posttreatment, using the Clinician Administered PTSD Scale for Diagnostic and Statistical Manual for Mental Disorders, 5th edition [DSM-5] (CAPS-5). Participants were also assessed weekly during treatment using the PTSD Checklist for DSM-5 (PCL-5). A 60-min PE was hypothesized to…