Recruiting

Digital Program

Sponsor:

Trustees of Dartmouth College

Code:

NCT07600671

Conditions

Eating Disorders

Anorexia Nervosa

Bulimia Nervosa

Binge Eating Disorder

Other Specified Feeding or Eating Disorder

Eligibility Criteria

Sex: All

Age: 18 - 70

Healthy Volunteers: Not accepted

Interventions

Eating Disorder Dynamic Intervention

Study Details

Brief summary:

The goal of this study is to develop and test a digital program to help people with eating disorders in their everyday lives. The program uses brief surveys and sensor data collected by smartphones to understand when someone may be at higher risk for behaviors like restricting food, binge eating, or using unhealthy weight control behaviors.

Conditions

Eating Disorders

Anorexia Nervosa

Bulimia Nervosa

Binge Eating Disorder

Other Specified Feeding or Eating Disorder

Study ID

NCT07600671

Start date

Jul 8, 2026

Status verified date

Jul, 2026

Completion date

Jul 31, 2030

Anticipated

Primary completion date

Jan 31, 2030

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18 - 70

Healthy Volunteers: Not accepted

Inclusion Criteria:

1. Age 18-70
2. At least 12 ED behaviors from the same behavioral category in the past 12 weeks (i.e., at least 12 binge eating episodes, at least 12 compensatory behaviors, and/or at least 12 instances of dietary restriction)
3. Ownership of a smartphone
4. Willingness to complete ecological momentary assessment (EMA) and sensor data collection
5. Live in the United States
6. Has a primary care provider or is willing to establish a primary care provider

Exclusion Criteria:

1. Inability to fluently speak, read, and write in English
2. Body mass index < 17.5 kg/m2
3. Medical complications of ED symptoms requiring immediate treatment
4. Current ED-focused therapy
5. Severe psychopathology (i.e., active suicidal ideation, psychosis, bipolar disorder, or substance use disorder) or intellectual disability inhibiting engagement in study protocols

Study Design

Enrollment

170 participants

Anticipated

Intervention Model

Single group

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: All Participants Receive Just-In-Time Adaptive Interventions (JITAIs) through the EDDI App

All participants will receive just-in-time adaptive interventions when their personalized model identifies that they are at risk for an eating disorder behavior. The content of the just-in-time adaptive intervention (i.e., the therapy skill targeted) will be randomized at the point of just-in-time adaptive intervention delivery.

Interventions

Eating Disorder Dynamic Intervention

Participants will use a smartphone-based program designed to support eating disorder recovery in daily life. Participants will complete brief surveys about their mood, thoughts, and behaviors, and the smartphone will also passively collect activity-related data. This information is used to detect times when a person may be at higher risk for eating disorder behaviors. Participants will watch 4 video modules that introduce the core enhanced cognitive-behavioral therapy skills for eating disorders (reducing dietary restraint, urge management, emotion regulation, and improving body image), provide rationale, and prompt participants to complete interactive activities to practice these skills. Participants will then receive micro-randomized JITAIs prompting them to use these skills in their daily lives; micro-randomization will be used to deliver a JITAI from one of the 4 skill categories (reducing dietary restraint, urge management, emotion regulation, improving body image) or no JITAI.

Primary outcome measure

  • Area under the receiver operating curve (AUC) [ Time Frame: Weeks 5 and 6 of data collection ]
  • Brier Score [ Time Frame: Weeks 5 and 6 of data collection ]
  • Binge eating [ Time Frame: Weeks 7 through 16 of data collection ]
  • Dietary restriction [ Time Frame: Weeks 7 through 16 of data collection ]
  • Compensatory behaviors [ Time Frame: Weeks 7 through 16 of data collection ]
  • Feasibility and Acceptability Questionnaire [ Time Frame: End of study assessment (after week 16 of data collection) ]
  • System Usability Scale [ Time Frame: End of study assessment (after week 16 of data collection) ]
  • Percentage of Eligible Participants Enrolled [ Time Frame: Through study completion, an average of 4 months ]
  • Attrition Rate [ Time Frame: Through study completion, an average of 4 months ]
  • Percentage of JITAIs Producing Skill Use [ Time Frame: Through study completion, an average of 4 months ]

Central Contacts and Locations

Central contacts

Emily K Presseller, PhD

(203) 974-2949emily.k.presseller@dartmouth.edu

Locations

Dartmouth College

Recruiting

Lebanon, New Hampshire, United States, 03766

Contacts

Emily K Presseller, PhD

603-646-7109eddi.project@dartmouth.edu

More Information

Sponsor

Trustees of Dartmouth College

Last update posted

Jul 16, 2026

Last verified

Jul, 2026

Keywords

  • binge eating
  • eating problem
  • eating disorder
  • purging
  • restriction
  • weight control behavior
  • dieting

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Trustees of Dartmouth College on 2026-07-16.