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Showing 1–24 of 276 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Targeted messaging Clear all
Completed Not applicable Interventional

Targeting PM to Improve HIV Adherence in Adolescents at Risk for Substance Abuse

NCT01959217
View directory record Official record
Conditions
Adherence, Substance Abuse
Interventions
PM Component Text Reminders
Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
16 Years to 29 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
2
States / cities
La Jolla, California • Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 9, 2018 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Targeting Pregnancy-related Weight Gain to Reduce Disparities in Obesity

NCT02229708
View directory record Official record
Conditions
Pregnancy, Body Weight Changes, Behavioral, Obesity
Interventions
Healthy Lifestyle Group
Behavioral
Lead sponsor
Temple University
Other
Eligibility
18 Years and older · Female only
Enrollment
262 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 16, 2019 · Synced Sep 4, 2026, 1:39 AM EDT
Not listed Not applicable Interventional

Using a Community-level Just-in-Time Adaptive Intervention to Address COVID-19 Testing Disparities

NCT05606003
View directory record Official record
Conditions
COVID-19
Interventions
Multi-Level Multi-Component Intervention (MLI), Community Just-In-Time Adaptive Intervention (Community JITAI)
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
1,280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
3
States / cities
Brownsville, Texas • Houston, Texas • Tyler, Texas
Source: ClinicalTrials.gov public record
Updated Nov 3, 2022 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional

Mobile Alcohol Use Intervention

NCT07126613
View directory record Official record
Conditions
Alcohol Misuse
Interventions
Mobile Health Intervention to Reduce Alcohol Use Among Young Adults
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 25 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Sep 4, 2026, 1:39 AM EDT
Recruiting Phase 3 Interventional

Reducing Missed Appointments

NCT06915480
View directory record Official record
Conditions
Neurodevelopmental Disorders
Interventions
Reminder message and patient navigation
Behavioral
Lead sponsor
Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
Other
Eligibility
1 Month to 24 Years
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Sep 4, 2026, 1:39 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Family Matters Intervention

NCT02669797
View directory record Official record
Conditions
Childhood Obesity, Cardiovascular Disease Prevention
Interventions
In-home Visits and Food Preparation Activities, Ecological Momentary Intervention, Feedback on Video-recorded Family Meals, Maintenance
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
5 Years to 10 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
2
States / cities
Aurora, Colorado • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 21, 2025 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional

Text Messaging Intervention to Improve Retention in Care and Virologic Suppression in an Urban HIV-Infected Population

NCT01917994
View directory record Official record
Conditions
HIV, Patient Adherence, Mobile Technology
Interventions
Text Messages, Appointment Reminders
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 7, 2017 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Sugary Drinks Counter-marketing Messages

NCT05953194
View directory record Official record
Conditions
Obesity, Weight Prejudice, Weight Gain, Dietary Habits
Interventions
Exposure to counter-marketing messages, Exposure to traditional health messages, Exposure to control (neutral) messages
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
2,184 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Sep 4, 2026, 1:39 AM EDT
Recruiting Not applicable Interventional

Stratified Targeted Engagement From Primary Care to Physical Therapy (STEPPT)

NCT07290361
View directory record Official record
Conditions
Low Back Pain, Neck Pain
Interventions
Engagement of clinic leadership (System Intervention - Usual Care), Engagement of clinic leadership (System Intervention - STEPPT), Patient Registry (System Intervention - STEPPT), Delivery of Patient Education Materials (System Intervention - Usual Care), Delivery of Patient Education Materials (System Intervention - STEPPT), Referral Specialist Training (System Intervention - Usual Care), Patient Health Navigator Training (System Intervention - STEPPT), Care Navigation (System Intervention - STEPPT), Care navigation audit and feedback (System Intervention - STEPPT), Primary Care Provider training (Provider Intervention - STEPPT), Nurse/Medical Assistant Training (Provider Intervention - STEPPT), Provider feedback on PT referral and adherence (Provider Intervention - STEPPT), Patient education on spine pain condition (Patient Intervention - Usual Care), Patient education on spine pain condition (Patient Intervention - STEPPT), Patient Education on Physical Referral by Providers (Patient Intervention - Usual Care), Patient Education on Physical Referral by Providers (Patient Intervention - STEPPT), Electronic Patient Education on Physical Therapy Referral (Patient Intervention - STEPPT), Patient education on physical therapy referral by Referral Specialist (Patient Intervention - Usual Care), Patient education on physical therapy referral by Patient Health Navigator (Patient Intervention - STEPPT), Care Navigation (System Intervention - Usual Care), Monitoring of PT referral and adherence rates (System Intervention - STEPPT), Monitoring of PT referral and adherence rates (System intervention - Usual Care)
Behavioral
Lead sponsor
San Diego State University
Other
Eligibility
18 Years and older
Enrollment
17,587 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 4, 2026, 1:39 AM EDT
Recruiting Not applicable Interventional

iCardia4HF: Multi-component mHealth Intervention for Patients With Heart Failure

NCT06205225
View directory record Official record
Conditions
Heart Failure
Interventions
Text4HF, MyApps, MyApps & Text4HF, Enhanced Usual Care
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 29, 2026 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Usability of HPV Vaccine Reminders

NCT03987490
View directory record Official record
Conditions
Human Papilloma Virus (HPV)
Interventions
Text Message, PostCard, Standard of Care, Motivational Interview
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 99 Years
Enrollment
325 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated May 18, 2020 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Results available

Bridging the Gap From Postpartum to Primary Care

NCT05543265
View directory record Official record
Conditions
Hypertension, Hypertension in Pregnancy, Diabetes Mellitus, Gestational Diabetes, Obesity, Depressive Disorder, Anxiety Disorders
Interventions
Default appointment scheduling, Targeted messaging, Nudge Reminders
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Targeted Video Messaging About Emergency Contraception

NCT03774368
View directory record Official record
Conditions
Contraception
Interventions
Emergency contraception website, Emergency contraception video
Other
Lead sponsor
Planned Parenthood League of Massachusetts
Other
Eligibility
18 Years to 29 Years · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 15, 2019 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reducing Teen Pregnancy in the Emergency Department

NCT03866811
View directory record Official record
Conditions
Reproductive Behavior, Sexual Behavior, Adolescent Behavior, Contraception
Interventions
Dr. Erica
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
14 Years to 19 Years · Female only
Enrollment
146 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 5, 2024 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional

MyChart in Patients With Inflammatory Bowel Disease.

NCT03241992
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
MyChart Disease Specific
Behavioral
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 27, 2019 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional

MI-BP: mHealth to Improve Blood Pressure Control

NCT02955537
View directory record Official record
Conditions
Hypertension
Interventions
MI-BP
Other
Lead sponsor
University of Michigan
Other
Eligibility
25 Years to 70 Years
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
2
States / cities
Ann Arbor, Michigan • Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 28, 2023 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Results available

A Digital Flu Intervention for People With Cardiovascular Conditions

NCT04584645
View directory record Official record
Conditions
Cardiovascular Diseases, Atrial Fibrillation, Abnormal Heart Rhythms, Cardiac Arrest, Heart Attack, Myocardial Infarction, Coronary Heart Disease, Heart Failure, Stroke, Cerebrovascular Accident
Interventions
Targeted digital intervention
Other
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years and older
Enrollment
49,138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Jun 20, 2022 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Network Intervention to Prevent Vaping

NCT04678245
View directory record Official record
Conditions
Vaping, Preventive Psychiatry, Social Networking
Interventions
Above the Influence-Vaping (ATI-V)
Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
12 Years to 18 Years
Enrollment
3,950 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 4, 2026, 1:39 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Young Adult Food Messaging Experiment

NCT07768462
View directory record Official record
Conditions
Diet Quality, Young Adult Health, Communication
Interventions
Lying about unhealthy foods being healthy, Engineering foods to be addictive, Targeting groups, Piggybacking on social causes, Covering up the evidence about the harms of unhealthy foods, Control
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 29 Years
Enrollment
645 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Natural Language Processing and Quality Assessment in Primary Care

NCT01023243
View directory record Official record
Conditions
Diabetes
Interventions
Brochure: Care of the Feet for Those at Risk, Quality Survey: foot exam, tobacco and aspirin use
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
Not listed
Enrollment
389 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 5, 2016 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

An Accessible Digital Intervention to Promote HIV Testing/Counseling and Prevention Among Adolescents

NCT03713034
View directory record Official record
Conditions
HIV Prevention
Interventions
PlayTest!, Control games
Other
Lead sponsor
Yale University
Other
Eligibility
14 Years to 18 Years
Enrollment
296 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 14, 2024 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Phase 2 Interventional

Internet-Based Nonsmoking Program for Postpartum Women

NCT02602730
View directory record Official record
Conditions
Cigarette Smoking, Smoking, Tobacco
Interventions
Break the Chain, Clearing the Air
Behavioral
Lead sponsor
Oregon Center for Applied Science, Inc.
Industry
Eligibility
18 Years to 90 Years
Enrollment
307 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Social Determinants of Sleep and Obesity

NCT05698693
View directory record Official record
Conditions
Insufficient Sleep, Physical Inactivity, Sedentary Behavior, Obesity
Interventions
Sleep intervention, Contact Control
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 4, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

mHealth Intervention in Increasing HPV Vaccinations in College Students

NCT02960100
View directory record Official record
Conditions
Healthy Subject
Interventions
Informational Intervention, Media Intervention, Survey Administration
Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years to 25 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 21, 2018 · Synced Sep 4, 2026, 1:39 AM EDT