The Efficacy of Cognitive Processing Therapy for PTSD Related to Military Sexual Trauma in Veterans: A Review

Trauma Center Trauma-Sensitive Yoga Versus Cognitive Processing Therapy for Women Veterans With PTSD Who Experienced Military Sexual Trauma: A Feasibility Study

BACKGROUND

Posttraumatic stress disorder (PTSD) is a common sequela to military sexual trauma (MST) among women veterans. Yoga has shown promise in research examining its benefit for symptoms and sequela of PTSD.

AIMS

The objective of this study was to evaluate the feasibility of a randomized controlled trial (RCT) of Trauma Center Trauma-Sensitive Yoga (TCTSY) for women veterans with PTSD related to MST.

METHOD

In this feasibility study, the final sample included women veterans (n = 41) with PTSD related to MST accessing health care in a Veterans Affairs Health Care System in the southeast United States; the majority were African American (n = 33; 80.5%). Interventions used established protocols of 10 weekly sessions of group TCTSY versus 12 weekly sessions of group Cognitive Processing Therapy (CPT). PTSD was assessed via clinical interview and participant report. Additional data collection included multiple participant-reported outcomes commonly associated with PTSD and psychophysiological measures. We also collected data regarding participant satisfaction and feasibility-related feedback from participants and providers.

RESULTS

Feasibility and acceptability were evaluated via demand, practicality, fidelity, and acceptability. This was measured by expressed interest, attendance, program completion, barriers to care and satisfaction with treatment, and satisfaction with interventions and data collection.

CONCLUSIONS

Results indicate the RCT design and TCTSY implementation were feasible; a full-scale RCT was subsequently conducted to determine efficacy of the experimental intervention. Recommendations for successful research strategies are provided.

Yoga vs Cognitive Processing Therapy for Military Sexual Trauma-Related Posttraumatic Stress Disorder: A Randomized Clinical Trial

Importance

First-line treatment for posttraumatic stress disorder (PTSD) in the US Department of Veterans Affairs (VA), ie, trauma-focused therapy, while effective, is limited by low treatment initiation, high dropout, and high treatment refraction.

Objective

To evaluate the effectiveness of Trauma Center Trauma-Sensitive Yoga (TCTSY) vs first-line cognitive processing therapy (CPT) in women veterans with PTSD related to military sexual trauma (MST) and the hypothesis that PTSD outcomes would differ between the interventions.

Design, Setting, and Participants

This multisite randomized clinical trial was conducted from December 1, 2015, to April 30, 2022, within 2 VA health care systems located in the southeast and northwest. Women veterans aged 22 to 71 years with MST-related PTSD were enrolled and randomized to TCTSY or CPT.

Interventions

The TCTSY intervention (Hatha-style yoga focusing on interoception and empowerment) consisted of 10 weekly, 60-minute group sessions, and the CPT intervention (cognitive-based therapy targeting modification of negative posttraumatic thoughts) consisted of 12 weekly, 90-minute group sessions.

Main Outcome and Measures

Sociodemographic data were collected via self-report survey. The primary outcome, PTSD symptom severity, was assessed using the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) and PTSD Checklist for DSM-5 (PCL-5). Assessments were conducted at baseline, midintervention, 2 weeks post intervention, and 3 months post intervention.

Results

Of 200 women veterans who consented to participate, the intent-to-treat sample comprised 131 participants (mean [SD] age, 48.2 [11.2] years), with 72 randomized to TCTSY and 59 randomized to CPT. Treatment was completed by 47 participants (65.3%) in the TCTSY group and 27 (45.8%) in the CPT group, a 42.6% higher treatment completion rate in the TCTSY group (P = .03). Both treatment groups improved over time on the CAPS-5 (mean [SD] scores at baseline: 36.73 [8.79] for TCTSY and 35.52 [7.49] for CPT; mean [SD] scores at 3 months: 24.03 [11.55] for TCTSY and 22.15 [13.56]) and the PCL-5 (mean [SD] scores at baseline: 49.62 [12.19] for TCTSY and 48.69 [13.62] for CPT; mean [SD] scores at 3 months: 36.97 [17.74] for TCTSY and 31.76 [12.47]) (P < .001 for time effects). None of the group effects or group-by-time effects were significant. Equivalence analyses of change scores were not significantly different between the TCTSY and CPT groups, and the two one-sided test intervals fell within the equivalence bounds of plus or minus 10 for CAPS-5 for all follow-up time points.

Conclusions and Relevance

In this comparative effectiveness randomized clinical trial, TCTSY was equivalent to CPT in reducing PTSD symptom severity, with both groups improving significantly. The higher treatment completion rate for TCTSY indicates its higher acceptability as an effective and acceptable PTSD treatment for women veterans with PTSD related to MST that could address current VA PTSD treatment limitations.

Trial Registration

ClinicalTrials.gov Identifier: NCT02640690.