Group Cognitive Processing Therapy for Combat-related Posttraumatic Stress Disorder (PTSD)

Primary Outcome Measures:

• Posttraumatic Stress Disorder Checklist-Stressor-specific Version (PCL-S) [ Time Frame: Baseline, weekly during treatment, posttreatment, 6-month and 12-month follow-up ]
  PCL-S measures symptoms of posttraumatic stress disorder in response to a specific stressor.
  
  

Secondary Outcome Measures:

• Beck Depression Inventory-II [ Time Frame: Baseline, weekly during treatment, posttreatment, 6-month, and 12-month follow-up ]
  The BDI-II is one of the most widely used instruments for measuring the severity of depressive symptoms. It consists of 21 items that assess both affective and somatic symptoms related to depression and depressive disorders. Each item is composed of four statements that reflect symptom severity. The statements are scaled from 0 (no disturbance) to 3 (maximal disturbance). Scores on all items are summed to obtain a total severity score.
  
  

Estimates indicate that between 100,000 and 300,000 Operation Iraqi Freedom (OIF) and Operation Enduring Freedom (OEF) veterans are at significant risk for chronic post-traumatic stress disorder (PTSD), which can become a chronic disorder that impacts all areas of a person's life. PTSD treatment programs are being developed throughout the Department of Defense (DoD) and the Veterans Affairs (VA), but because of the large number of Service Members returning from deployment with PTSD, it is often necessary to provide psychotherapy in groups. Cognitive Processing Therapy (CPT), an evidence-based treatment for PTSD, was originally developed as a group-based intervention. However, group-based CPT treatment has never been systematically compared to other forms of group treatment. The public policy implications of the results of this trial are significant. If group treatment is found to be effective, then group treatment would be a more efficient and cost-effective therapy modality in most cases. The purpose of this study is to compare group-administered CPT-Cognitive-only version (CPT-C) to Present Centered Therapy (PCT) in order to determine whether the results of CPT exceed those of receiving a therapy that focuses on current problems rather than past trauma in a group format. One hundred (100) adult male and female active-duty OIF/OEF military personnel over 18 years of age will be enrolled into this study. Participants will be randomized to receive either group PCT or group CPT-C.