Stepped Versus Stratified Care for Anxiety Disorders in Youth

Summary

The goal of this clinical trial is to compare stepped care to stratified care as overall healthcare models for children and adolescents aged 8-17 with anxiety disorders. It addresses one main question:

• Is stepped care non-inferior to stratified care in supporting participants to achieve a treatment response?

Researchers will compare two care models:

* Stepped care, where all participants begin with 14 weeks of internet-delivered cognitive behavioral therapy (ICBT) and receive an additional 14 weeks of personalized in-person CBT if needed.
* Stratified care, where participants are assigned to either 14 weeks of ICBT or 14 weeks of in-person CBT based on clinical complexity, and may also receive additional 14 weeks of in-person CBT if necessary.

Participants will:

* Be randomly assigned to one of the two care models.
* Complete a wide range of assessments at baseline, during treatment, and at 4, 8, 12, and 24 months, with the 8-month point as the primary endpoint.
* Receive either ICBT, in-person CBT, or both, depending on their care model and response to treatment.
* Participate in ancillary studies involving DNA sampling, cognitive testing, and national registry linkages to help predict treatment response and long-term outcomes.

Conditions

• Social Anxiety Disorder
• Separation Anxiety Disorder
• Specific Phobia
• Panic Disorder
• Generalized Anxiety Disorder
• Agoraphobia

Interventions

BEHAVIORAL

Internet-delivered cognitive-behavioral therapy

Internet-delivered cognitive behavioral therapy (ICBT) is a 12-module intervention delivered over a maximum of 14 weeks. Two age-specific versions are available: \[1\] for children aged 8-12 years and \[2\] for adolescents aged 13-17 years. Both versions share the same core content, but the texts, illustrations, videos, and exercises are adapted to be developmentally appropriate. Each version focuses on exposure, along with psychoeducation, coping strategies, and relapse prevention. Caregivers have access to a parallel program that mirrors the structure of the youth program. Both patients and caregivers engage with a therapist through a secure digital platform, communicating via text messages similar to emails. Two scheduled telephone or videoconference calls are conducted approximately 3-4 and 7-8 weeks into treatment, respectively, to follow up on adherence and address questions related to the intervention. Additional telephone support will be available on demand.

BEHAVIORAL

Personalized in-person cognitive-behavioral therapy

Personalized in-person cognitive-behavioral therapy (CBT) follows a manual drawing on previously published protocols and meta-analyses on effective components of CBT for pediatric anxiety disorders and results from our pilot study. It consists of 12 weekly one-hour sessions delivered over a maximum of 14 weeks. It follows a disorder-specific CBT approach, with a strong emphasis on therapist-led exposure tailored to the patient's principal anxiety disorder. Participants receive workbooks containing information on anxiety disorders, the treatment rationale, and the rationale for exposure therapy. The intervention has three phases: \[1\] 1-2 sessions of psychoeducation and symptom identification, \[2\] 8-10 sessions of therapist-led exposure with homework, and \[3\] 1-2 sessions of relapse prevention planning. Caregiver involvement is tailored to the individual needs of each participant, with a maximum of 2 additional hours allocated for caregivers beyond the standard treatment time.

Sponsors & Collaborators

• Lund University

  collaborator OTHER

• Region Skane

  lead OTHER

Principal Investigators

• Matti Cervin, PhD · Lund University & CAMHS Skåne

• Eva Serlachius, MD, PhD · Lund University & CAMHS Skåne

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

8 Years

Max Age

17 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2025-06-19

Primary Completion

2029-11-05

Completion

2031-03-05

Countries

• Sweden

Study Locations