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Front Psychol. 2018 May 3;9:639. doi: 10.3389/fpsyg.2018.00639. eCollection 2018.

The Bergen 4-Day OCD Treatment Delivered in a Group Setting: 12-Month Follow-Up.

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OCD-Team, Haukeland University Hospital, Bergen, Norway.
Department of Clinical Psychology, University of Bergen, Bergen, Norway.
OCD-Team, Molde Hospital, Molde, Norway.
Department of Psychology, Stockholm University, Stockholm, Sweden.
Department of Psychology, Norwegian University of Science and Technology, Trondheim, Norway.


The Bergen 4-day concentrated exposure treatment (cET) for obsessive-compulsive disorder (OCD) has proven highly acceptable; with practically no drop-out and a 6 month remission rate of nearly 70%. The aim of the present study was to evaluate long term gains of the approach, and to compare the results to findings from our recent meta-analysis. Sixty-nine of 95 patients consecutively referred to an outpatient clinic in the specialist health care, were offered the Bergen 4-day treatment. Among the 65 who initiated treatment, 60.0% were classified with "severe" to "extreme" OCD. None of the patients dropped-out during treatment. Independent Yale-Brown Obsessive-Compulsive Scale interviews were conducted post-treatment, and at 3- and 12-month follow-up. Using the international consensus criteria, 83.1% responded to treatment at 12-month follow-up, and 67.7% of patients were classified as recovered. Significant changes were also seen in depression, as measured by Patient Health Questionnaire-9, and in generalized anxiety, as measured by Generalized Anxiety Disorder-7 scale. A total of 89% of the patients rated the treatment as very good and 100% would recommend the treatment to a friend. Compared to results in a recent meta-analysis, the Bergen 4-day treatment is favorable in respect to attrition, response and 12-month recovery. In sum the Bergen 4-day treatment is a feasible way to deliver treatment for OCD, and the effects are stable at 12-month follow-up. Implications for dissemination are discussed.


Bergen 4-day program; ERP; OCD; concentrated exposure treatment; group format; long term follow-up; patients' acceptance

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