Effect of SC-ICBT for Adults With OCD：A Three-Arm Randomized Controlled Trial

Shanghai Mental Health Center

Status: Terminated

Conditions: Obsessive-Compulsive Disorder

Treatments: Other: stepped-care Internet-based cognitive behavioral therapy(SC-ICBT); Drug: conventional medical treatment (TAU); Other: Cognitive Behavioral Group Therapy (CBGT)

Study type: Interventional

Funder types: Other

Identifiers

NCT05528224

OCDICBT2022-36

Details and patient eligibility

About

The goal of this clinical trial is to learn about the efficacy and cost-effectiveness of stepped-care Internet-based cognitive behavioral therapy (SC-ICBT) compared with Cognitive Behavioral Group Therapy (CBGT) and conventional medical treatment (treatment as usual, TAU) in adults with obsessive-compulsive disorder (OCD) in China.

The main questions it aims to answer are:

question 1: Whether the efficacy of SC-ICBT is noninferior to CBGT and TAU for OCD?

question 2: Whether SC-ICBT is more cost-effective than CBGT and TAU for OCD?

Participants will receive treatment (SC-ICBT or CBGT or TAU) for 6 weeks.

Prior to the main study, we conduct a non-randomized pilot study to explore the efficacy and cost-effectiveness of SC-ICBT related to CBGT for adults with OCD in China.

Full description

Internet-based cognitive behavioral therapy (ICBT) integrates the Internet and cognitive behavioral therapy, which enables patients to participate in different treatment modules online. ICBT has been proved to be an effective way to improve the symptoms of OCD patients with lower cost. Stepped care model (SCM) allows to better balance the efficacy of treatment and the cost of treatment.

In the main study, the investigators plan to develop an intervention pattern of stepped-care Internet-Based cognitive behavioral therapy (SC-ICBT): After individualized assessment（0 week and 3 week separately）, OCD patients will be provided with self-guided ICBT or therapist-guided ICBT through the severity of their symptoms flexibly. This study will be a randomized, controlled, assessor-blinded trial of three groups in OCD: Stepped-care Internet-based Cognitive Behavioral Therapy (SC-ICBT) combined with medication, Cognitive Behavioral Group Therapy (CBGT) combined with medication, and conventional medical treatment (TAU). The study aims to investigate the efficacy and cost-effectiveness of SC-ICBT related to CBGT and TAU for adults with OCD in China.

To initially validate the feasibility of SC-ICBT in Chinese patients with OCD, the investigators plan to firstly conduct a small, non-randomized pilot study prior to the main study. In the pilot study, patients assigned to SC-ICBT group will begin with self-guided ICBT, followed by an assessment of their treatment outcomes at week 3, with non-responders being escalated to a higher intensity of treatment, and additional therapist-guided ICBT in the following three weeks.

In the main study, the investigators plan to recruit 114 OCD patients and randomly assigns them to the SC-ICBT group, CBGT group, and TAU group for treatment of 6 weeks and follow-up of 3 months.

While in the pilot study, 46 OCD patients will be recruited and assigned to the SC-ICBT group or CBGT group based on their autonomous will.

Questionnaires, scales, behavior experiments and other experimental materials will be used to evaluate the intervention effect of 6-week SC-ICBT on obsessive and compulsive symptoms, cognitive function and quality of life of OCD patients as well as patients' and therapists' cost.

Enrollment: 46 patients

Sex: All

Ages: 18 to 50 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Age between 18 and 50 years
2. Satisfied with the diagnostic criteria for OCD in DSM-5.
3. 16≤YBOCS score ≤31
4. Taking medication stably for 8 weeks
5. Education level ⩾6 years
6. Has sufficient audiovisual skills to complete the necessary examinations for the study.
7. Right-handed (this criterion is for fMRI subjects only)
8. Subjects and their guardians understood the study and signed informed consent.

Exclusion criteria

1. Satisfied with the diagnostic criteria for a mental disorder in DSM-V other than OCD.
2. Obsessive-compulsive symptoms were too severe to participate in the experiment.
3. High risk of suicide.
4. Severe central system or physical disease
5. Pregnant women or women that getting ready for being pregnant and lactating.
6. Other treatments being performed.
7. Uncooperative or unable to complete treatment
8. With metal implants in the body, such as pacemakers, intracranial silver clips, metal dentures, arterial stents, arterial clips, joint metal fixation, or other metal implants, etc. (this criterion is for fMRI subjects only)

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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46 participants in 3 patient groups

stepped-care Internet-based cognitive behavioral therapy(SC-ICBT) combined with medication

Experimental group

Description:

In the main study, after individualized assessment（0 week and 3 week separately）, OCD patients will be provided with self-guided ICBT or therapist-guided ICBT through the severity of their symptoms flexibly while they will continue with the medications they already have. In the pilot study, 23 OCD patients will be assigned to SC-ICBT group based on their autonomous will. They will begin with self-guided ICBT, followed by an assessment of their treatment outcomes at week 3, with non-responders being escalated to a higher intensity of treatment, and additional therapist-guided ICBT in the following three weeks. During the 6-week treatment they will continue with the medications they already have.

Treatment:

Drug: conventional medical treatment (TAU)

Other: stepped-care Internet-based cognitive behavioral therapy(SC-ICBT)

Cognitive Behavioral Group Therapy (CBGT) combined with medication

Active Comparator group

Description:

In the main study, OCD patients will be provided with therapist-guided offline Cognitive Behavioral Group Therapy while they will continue with the medications they already have. In the pilot study, 23 OCD patients will be assigned to CBGT group based on their autonomous will. They will receive the same CBGT intervention as in the main study while they will continue with the medications they already have.

Treatment:

Other: Cognitive Behavioral Group Therapy (CBGT)

Drug: conventional medical treatment (TAU)

conventional medical treatment (TAU)

Active Comparator group

Description:

In the main study, OCD patients will be treated as usual. Namely, they will continue with the medications they already have. This group is not present in the pilot study, as both SC-ICBT group and CBGT group combines medications. We suppose that the mere use of SC-ICBT group compared to CBGT group (a commonly used psychotherapy in Chinese clinical practice) is sufficient to draw conclusions about the feasibility of SC-ICBT in in adults with OCD in China. However, in order to further validate the economic benefits of SC-ICBT, we chose to set TAU group in the main study.

Treatment:

Drug: conventional medical treatment (TAU)