Future Directions for Research and Implementation of the Bergen 4-Day Treatment for OCD

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In a randomized trial of 119 adults with OCD, the Bergen 4-Day Treatment (B4DT) outperformed unguided internet-based cognitive behavioral therapy, with a large effect size (g = −1.6).
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At 3-month follow-up, B4DT response and remission rates were 61.4% and 42.1%, respectively, compared with 25% and 13.6% for internet-based therapy.
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Future trials should compare B4DT with an equivalent dose of active exposure and response prevention delivered over a longer period.
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Only 119 of 253 screened adults entered the trial; future research should report screening and exclusion reasons and study clinically diverse samples in naturalistic settings.
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The B4DT’s place in care and its accessibility remain uncertain, warranting rigorous control conditions and broad international replication across patients with differing motivation and engagement.

Jama Network Open

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