Dissertation Title: Cognitive Processing Therapy As An Intervention For Combat-Related Post-Traumatic Stress Disorder
Research Methodology: Systematic literature review
Research Design: Systematic review of quantitative and qualitative outcome studies with thematic synthesis
Abstract
Background: Post-traumatic stress disorder (PTSD) is one of the leading psychiatric disorders among soldiers and veterans, including those deployed in Operation Enduring Freedom (OEF) and Operation Iraqi Freedom (OIF). Despite multiple available interventions, there has been ongoing interest in identifying and refining effective, evidence-based psychological treatments tailored to combat-related PTSD in this population.
Aim: The purpose of this review was to assess the effectiveness of Cognitive Processing Therapy (CPT) for combat veterans with PTSD-related symptoms, specifically focusing on OEF/OIF veterans.
Methods: A systematic literature search was conducted in three electronic databases: CINAHL, PsycINFO, and PubMed. Studies were included if they examined the impact of CPT on PTSD symptom severity in OEF/OIF veterans. Seven eligible studies were identified and critically appraised. Data were synthesised thematically to identify recurring patterns related to CPT delivery and outcomes.
Results: Four key themes emerged from the analysis: (1) administration of CPT, including format, setting, and fidelity; (2) comorbidity with other mental health disorders, such as depression and substance use, and its influence on treatment response; (3) combined treatment with other procedures, for example pharmacotherapy or adjunctive therapies; and (4) timing of CPT administration, including stage of post-deployment and chronicity of symptoms. Across the included studies, CPT was consistently associated with clinically meaningful reductions in PTSD symptom severity, although outcomes could be moderated by comorbid conditions and treatment context.
Conclusion: This systematic review indicates that CPT is an effective psychological intervention for reducing PTSD symptoms among OEF/OIF combat veterans. The findings support the continued use and optimisation of CPT within veteran mental health services, with attention to comorbidities, integration with other treatments, and appropriate timing of intervention to maximise therapeutic benefit.
Keywords: Cognitive Processing Therapy (CPT), PTSD symptoms, OEF/OIF veterans, combat trauma