Transdiagnostic self-help treatments for anxiety and/or depression : A full-factorial RCT investigating psychotherapeutic modalities, discussion boards and treatment length

• ContextTypically, internet-based treatment programs are effective for a wide range of specific psychiatric diagnoses. However, diagnosing, and matching treatments to an individuals' need, is a challenge and potentially resource intensive. In this study, a computer automatically made the decision on inclusion and exclusion.Methods: A total of 2400 participants presenting with anxiety and/or depression were randomized into 12 subgroups (n=200 each) based on treatment modality (Cognitive Behavior Therapy vs. Psychodynamic Therapy vs. Waitlist), duration (8 vs. 16 weeks) and moderated discussion forum (Yes vs. No). Weekly measurements using PHQ9 and GAD7 were the primary outcome measures.Intervention (if relevant): Unified Protocol is a transdiagnostic Cognitive Behavior Therapy method for symptoms of anxiety and depression. The Affect Phobia treatment program was based on Psychodynamic models and treatment principles. The participants were also randomly assigned to either having (50%) or not having (50%) access to a discussion forum that was moderated by a clinician. Finally, all participants of the two treatment groups and the waitlist-control group were also randomly assigned to either an 8- or 16-week intervention duration.Results: All 2400 participants have been recruited. However, all post-assessment data is not yet collected at the time of writing (but will be by the time of the conference). The results will show if transdiagnostic treatment is better than a waitlist, if there is a relative difference between Cognitive Behavior Therapy and Psychodynamic treatment, if there is a relative difference between a 8 or 16 week long treatment, and if a discussion group has any added value.Conclusions: Since weekly assessment of outcome has been collected the statistical power is strong, especially since the total number of participants is 2400.Implications: The outcome will give a clear answer to several dissemination questions including treatment length, the added value of discussion boards and type of treatment (CBT vs. PDT).

Ämnesord

SAMHÄLLSVETENSKAP  -- Psykologi (hsv//swe)

SOCIAL SCIENCES  -- Psychology (hsv//eng)

Nyckelord

psykologi

Psychology

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