Phase II Efficacy Study on Group Delivery of Effective Treatments for PTSD
Phase II Efficacy Study on Group Delivery of Effective Treatments for PTSD
The purpose of the study is to evaluate the efficacy of a group protocol for the delivery of evidence-based therapies in comparison to a wait-list control and evaluate the relative contribution of exposure, cognitive, and skills blocks of treatment in a 16-session manualized group treatment protocol in a sample of OIF/OEF female PTSD veterans. Hyp1: Overall improvement is expected in PTSD symptoms compared to a wait-list control group; and Hyp2: the exposure and cognitive components are expected to show greater improvement in PTSD symptoms than the skills component. Significant results will establish the efficacy of a group format for evidence-based treatments for all veterans with a PTSD diagnosis. An ancillary part of the study is to examine initial neuropsychological presentation in this population and possible changes that may occur as the result of treatment.
OBJECTIVES: The objectives are to 1) evaluate the effectiveness of exposure, cognitive, and skills (assertiveness/relaxation) therapies within a 16-session group; and 2) evaluate the relative contribution of each of three treatment components in a manualized treatment group in a sample of OIF/OEF female PTSD veterans. HYPOTHESES: Hypothesis 1. Female OIF/OEF PTSD veterans will show reductions in PTSD symptoms and improvement in general functioning after participation in a structured group treatment compared to a wait-list control group. Hypothesis 2. Exposure and cognitive components will show greater improvement in PTSD symptoms than the skills component. RESEARCH DESIGN/BACKGROUND: Based on studies with male combat veterans, female civilian rape victims, and female veterans, therapies most effective for Posttraumatic Stress Disorder (PTSD) are exposure therapy (1,2,3) and cognitive restructuring (4), with less improvement found in other treatments, such as relaxation and assertiveness training (5). Most examinations of PTSD treatments have been conducted in an individual format, but most PTSD treatments offered in Veterans Administration (VA) hospital PTSD programs are conducted in a group format (6). It is critical to determine if these therapies work in a group setting, as only one study (7) found no differences in exposure therapy compared to a support group. In a comprehensive manualized group treatment protocol (8) exposure therapy provided in a group was found effective (9). The aim of the present study is to establish the effectiveness of exposure therapy, among other evidence-based therapies, in a well designed randomized study. METHODOLOGY: Castillo's (8) manualized group treatment protocol for female veterans with PTSD will be modified into a 16-week treatment group with a five-week exposure, five-week cognitive, and four-week skills treatment blocks. Seventy-two subjects will be assessed with structured interviews (SCID and CAPS) and questionnaires (Traumatic Life Events and Quality of Life Inventory) and randomized into one of two arms: 16-week immediate treatment, or a 16-week wait-list control, the latter of which will be reassessed and offered the study treatment. Oversampling will result in 72 subjects in the active treatment arm. Subjects will be reassessed upon completion of treatment or wait-list, at 3, and 6 months following treatment. All treatment groups will include three female OIF/OEF veterans positive for PTSD. The treatment blocks will be varied into six possible orders to control for order effects and the PTSD Symptom Checklist will be administered after each treatment block. Data will be collected for three years. CLINICAL RELATIONSHIPS: Significant results will contribute to the establishment of evidence-based treatments in a manualized treatment group for all veterans with a PTSD diagnosis. FINDINGS: Present findings from Dr. Castillo's lab suggest the effectiveness of exposure therapy in a group setting.
Inclusion Criteria:
Exclusion Criteria: