Four-day intensive treatment for obsessive-compulsive disorder - a feasibility study

Bergen 4 Day Treatment (B4DT) for Obsessive-Compulsive Disorder (OCD) – an observational feasibility study

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN35242159

Enrollment

Registered

2022-06-10

Start date

2022-05-01

Completion date

Unknown

Last updated

2022-06-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obsessive-compulsive disorder Mental and Behavioural Disorders OCD

Interventions

The patients will receive a concentrated exposure treatment (cET) conducted in four consecutive days in HUS psychiatry outpatient clinic according to Bergen four day treatment for OCD (B4DT) manual.

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: DSM-5 Obsessive-compulsive disorder

Exclusion criteria

Exclusion criteria: 1. Concurrent psychotic disorder 2. Substance use disorder 3. Imminent risk of suicide 4. Congenital disability 5. New antidepressant or antipsychotic pharmacotherapy trial started within the last six weeks 6. Use of benzodiazepines is allowed only for insomnia 7. Ongoing other evidence-based psychotherapy for OCD

Design outcomes

Primary

Measure	Time frame
Within-individual decline in Y-BOCS score before the intervention vs. after the treatment and at three months.	—

Secondary

Measure	Time frame
Measured before the intervention vs. after the treatment and at three months. 1. OCD symptoms measured with OCI-R and DOCS-SF 2. Depression (PHQ-9) 3. Anxiety (GAD-7) 4. Sleeping problems (BIS) 5. Functionality (WSAS) 6. Well-being (WEMWBS) 7. Client satisfaction (CSQ-8)	—

Countries

Finland

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026