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Keywords:

  • cognitive behavioral therapy;
  • iCBT;
  • Internet;
  • online therapy;
  • outcome;
  • posttraumatic stress disorder;
  • treatment

Abstract

Background: Posttraumatic stress disorder (PTSD) is a severe and disabling condition and few receive appropriate care. Internet-based treatment of PTSD shows promise in reducing barriers to care and preliminary evidence suggests it is efficacious in treating symptoms of PTSD. Methodology: Forty-two individuals with a diagnosis of PTSD confirmed by clinician interview completed a randomized controlled comparison of Internet-based cognitive behavioral therapy (CBT) with a waitlist control condition. Principle Findings: Large pre- to posttreatment effect sizes (ESs) were found for the Treatment group on measures of PTSD symptoms, depression, anxiety, and disability. A small between-group ES was found for PTSD symptoms and moderate between-group ESs were found for depression, anxiety, and disability. Conclusions: Results provide preliminary support for Internet-based CBT as an efficacious treatment for individuals with a confirmed primary diagnosis of PTSD. Depression and Anxiety, 2011. © 2011 Wiley-Liss, Inc.