A concentrated approach for treating OCD: a pilot study examining the feasibility and potential effectiveness of the Bergen Four Day Treatment in the U.S.

The Bergen Four Day Treatment (B4DT) is a concentrated treatment for OCD that has demonstrated promising effectiveness in Nordic country samples. The B4DT is delivered over four days and provides individual treatment in a group context. The effectiveness of the B4DT for OCD has not been tested outside Nordic countries. The current pilot study evaluated the feasibility and the potential effectiveness of B4DT in a different culture and health-care system in the United States. Findings from 48 adults with OCD who completed the B4DT indicated that OCD, anxiety, and depression symptom severity significantly decreased from pre- to post-treatment, and gains were maintained at six month follow-up. The Yale-Brown Obsessive Compulsive Scale scores were reduced from moderate to subclinical; specifically, the average scores of 27.0 (pre-treatment) fell to 11.7 (post-treatment), 12.7 (3-month follow-up), and 13.7 (6-month follow-up). The B4DT was rated as highly acceptable by the US patients. Over 95% of the patients stated that they would recommend the treatment to a friend. These findings provide the first preliminary evidence for the generalizability of the B4DT to patients outside Nordic countries. Cultural and context-dependent issues that affected this dissemination pilot study are discussed in addition to future clinical and research directions.