Just-In-Time Adaptive Interventions for Addictive Behaviors
Public ClinicalTrials.gov record NCT03538652. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Many smartphone apps intend to help people with addictions. But not enough is known about how they should work. Researchers want to study an app that gives people the advice they need, just when they need it. This is a Just-In-Time Adaptive Intervention (JITAI). To create a good JITAI, researchers need to know what approaches work best at different moments. Objective: To develop ways to treat addiction with a smartphone app. Eligibility: Adults ages 18-75 who use heroin or other opioids Design: Participants will be screened in another protocol. Participants will visit a Baltimore clinic 3 days a week to give urine and breath samples. Some participants will get their treatment at this clinic. Participants will answer questions about their personality and stress. Participants will randomly be assigned to the JITAI group or a comparison group. Participants will have a training session on using the smartphone app. JITAI participants will also watch a video about the written messages they will see in the app. Weeks 3-10: Participants will carry a smartphone. Four times a day, it will beep and ask questions. These will be about the participants' activities and mood. The JITAI group will see a short message after. The message is meant to be helpful. For the first 16 evenings, JITAI participants will get more information on the phone. Answers to the app's questions will be transferred automatically from the smartphone to secure computers at the NIH. During the last week, participants can choose the kind of messages they see. Week 11: participants will return the smartphone and answer questions. Weeks 12-16, participants who are getting their medicine from the research clinic will be encouraged to transfer to other clinics. Otherwise, they will have their dose slowly reduced to zero.
Study identification
- NCT ID
- NCT03538652
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 9 participants
Conditions and interventions
Conditions
Interventions
- Formative Interviews (not an intervention) Other
- Cognitive-behavioral therapy (CBT) Behavioral
- Acceptance and commitment therapy (ACT) Behavioral
- No intervention Other
Other · Behavioral
Eligibility (public fields only)
- Age range
- 18 Years to 75 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Feb 18, 2020
- Primary completion
- Mar 12, 2020
- Completion
- Mar 12, 2020
- Last update posted
- Sep 8, 2025
2020
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institute on Drug Abuse | Baltimore | Maryland | 21224 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03538652, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 8, 2025 · Synced Sep 11, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03538652 live on ClinicalTrials.gov.