Implementation of a Just-In-Time Adaptive Intervention for Adolescent Anxiety

The goal of this clinical trial is to evaluate a smartphone based just-in-time adaptive intervention (JITAI) tool to deliver somatic behavioral recommendations for anxiety management among youth. The main questions it aims to answer are: * Is the JITAI tool acceptable among the adolescent study population? * Is the JITAI tool feasible to deliver to the adolescent study population? * Does the study support preliminary efficacy of the JITAI tool among the adolescent study population? The tool will be pilot-tested among a sample of 50 rural adolescents experiencing elevated anxiety levels who will be randomly assigned to the JITAI tool or a waitlist control, for a treatment period of 3 months. Participants will be asked to: * Use the smartphone based JITAI tool which will deliver somatic behavioral recommendations intended to manage anxiety levels for a treatment period of 3 months * Respond to the tool's prompts on a daily basis and follow the delivered behavioral recommendations * Complete anxiety and interoception assessments at study start, study end (3 months), and one-month follow-up * Complete usability and user experience instruments at study end (3 months)

NCT Number	NCT06946823
Lead Sponsor	Trustees of Dartmouth College
Conditions	Anxiety, Anxiety Disorders, Anxiety Disorder of Childhood
Enrollment	50 participants
Start Date	2027-01
Primary Completion	2027-05 (estimated)
Study Completion	2027-05 (estimated)
Updated on ClinicalTrials.gov	2026-04-02