• Behav Res Ther · Aug 2011

    Randomized Controlled Trial

    Transdiagnostic internet treatment for anxiety and depression: a randomised controlled trial.

    • Nickolai Titov, Blake F Dear, Genevieve Schwencke, Gavin Andrews, Luke Johnston, Michelle G Craske, and Peter McEvoy.
    • School of Psychiatry, University of New South Wales, Sydney, Australia. nick.titov@mq.edu.au
    • Behav Res Ther. 2011 Aug 1;49(8):441-52.

    AbstractDisorder-specific cognitive behavioural therapy programs delivered over the internet (iCBT) with clinician guidance are effective at treating specific anxiety disorders and depression. The present study examined the efficacy of a transdiagnostic iCBT protocol to treat three anxiety disorders and/or depression within the same program (the Wellbeing Program). Seventy-seven individuals with a principal diagnosis of major depression, generalised anxiety disorder, panic disorder, and/or social phobia were randomly assigned to a Treatment or Waitlist Control group. Treatment consisted of CBT-based online educational lessons and homework assignments, weekly email or telephone contact from a clinical psychologist, access to a moderated online discussion forum, and automated emails. Eighty one percent of Treatment group participants completed all 8 lessons within the 10 week program. Post-treatment data were collected from 34/37 Treatment group and 35/37 Control group participants, and 3-month follow-up data were collected from 32/37 Treatment group participants. Relative to Controls, Treatment group participants reported significantly reduced symptoms of anxiety and depression as measured by the Depression Anxiety and Stress Scales-21 item, Patient Health Questionnaire-9 item, and Generalised Anxiety Disorder-7 item scales, with corresponding between-groups effect sizes (Cohen's d) at post treatment of.56,.58, and.52, respectively. The clinician spent a mean time of 84.76 min (SD=50.37) per person over the program. Participants rated the procedure as highly acceptable, and gains were sustained at follow-up. These results provide preliminary support for the efficacy of transdiagnostic iCBT in the treatment of anxiety and depressive disorders.Copyright © 2011 Elsevier Ltd. All rights reserved.

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