Early access
Sign in
Taking peopleNo phase

Bergen Four-Day Treatment (B4DT) for Obsessive-Compulsive Disorder

Key facts

Who runs it
Tampere University Hospital
Where
Finland1 site in 1 countryChoose a country to see its sites
Trial code
Status
Recruiting
People taking part
65 people, planned
Started
1 Jun 2026
Expected to end
Dec 2027
Type of study
Interventional
Treatments tested
  • Bergen Four-Day Treatment (B4DT)
Record updated
8 September 2026

Who can take part

Age
18 years and older
Sex
Women and men
Healthy volunteers
Cannot take part

The registry criteria, word for word

Show all 10 criteriaShow less

Who can take part

  • diagnosed with obsessive-compulsive disorder
  • willingness to participate in exposure-based treatment

Who cannot take part

  • benzodiazepine medication (use of Z-drugs as sleep medication is permitted)
  • autism spectrum disorder that precludes engagement in psychotherapeutic work
  • a psychotic disorder with current psychotic symptoms
  • intellectual disability
  • underweight or very rapid weight loss affecting cognition
  • severe suicidality
  • substance dependence
  • In addition, ongoing psychotherapy may prevent participating in the B4DT

This trial has no sites in United States.

It has sites in one country. Choose a country to see its sites.

About the trial

What the trial wants to find out

The aim of this study is to expand access to Bergen Four-Day Treatment (B4DT) in Finland and to integrate it into psychiatric care pathways at Tampere University Hospital (TAYS). A Bergen team has been established within TAYS Psychiatry and has been trained in collaboration with the B4DT team from HUS and the Norwegian developers. The objective of this study is to enhance understanding of the model's adaptability to the Finnish healthcare system, evaluate healthcare professionals' attitudes toward the intervention, and assess treatment outcomes.

Read full original descriptionShow less

The aim is to recruit approximately 35 patients for the study. Patients will be recruited from a minimum of three groups (15 patients) and up to a maximum of six groups (35 patients). The criteria for admission to B4DT and for participation in the study are identical. The treatment and the study may include patients receiving specialized psychiatric care at Tampere University Hospital who have been diagnosed with obsessive-compulsive disorder and who experience significant impairment due to their symptoms. In addition, personnel from TAYS Psychiatry who recommend and refer patients for B4DT will be recruited for the study. The estimated number of participating staff members is approximately 30.

The group in the trial

  • Bergen Four-Day TreatmentTreatment being tested

    Treatment: Bergen Four-Day Treatment (B4DT)

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Record updated
8 September 2026