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ClinicalTrials.gov public records Last synced Oct 27, 2026, 8:02 AM EDT

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Showing 913–936 of 1,681 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Health message Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Comparing Mobile Health Strategies to Improve Pre-exposure Prophylaxis Use (PrEP) for HIV Prevention

NCT04855773
View directory record Official record
Conditions
HIV Infections, Sexually Transmitted Diseases
Interventions
PrEPmate, Dot Diary
Other · Device
Lead sponsor
Public Health Foundation Enterprises, Inc.
Other
Eligibility
15 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
4
States / cities
San Francisco, California • Washington D.C., District of Columbia • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 27, 2026, 8:02 AM EDT
Completed No phase listed Observational Results available

Post-op Crowd Sourcing Health Data Via Text-messaging

NCT03532256
View directory record Official record
Conditions
Orthopedic Surgery, Opioid Use, Acute Injuries Knee, Neurosurgery, Surgery
Interventions
Observation, Text to online survey, Bi-directional text script
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Oct 27, 2026, 8:02 AM EDT
Terminated Not applicable Interventional

ASK-PrEP (Assistance Services Knowledge-PrEP)

NCT05934877
View directory record Official record
Conditions
Substance Use Disorders, HIV
Interventions
PrEP navigation + text messaging, Standard of Care, Contingency Management
Behavioral
Lead sponsor
Friends Research Institute, Inc.
Other
Eligibility
18 Years and older · Male only
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Results available

Using Explainable AI Risk Predictions to Nudge Influenza Vaccine Uptake

NCT05009251
View directory record Official record
Conditions
Influenza, Vaccination, Health Promotion, Health Behavior, Risk Reduction
Interventions
Reminder, Risk reduction, Medical records-based recommendation, Algorithm-based recommendation
Behavioral
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
45,061 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 3, 2025 · Synced Oct 27, 2026, 8:02 AM EDT
Not listed No phase listed Observational

Everybody Brush: A Community-wide Toothpaste Distribution Campaign

NCT02327507
View directory record Official record
Conditions
Dental Caries
Interventions
Toothpaste & Telephone Support
Behavioral
Lead sponsor
Advantage Dental Services, LLC
Industry
Eligibility
6 Months to 20 Years
Enrollment
21,731 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Redmond, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 30, 2014 · Synced Oct 27, 2026, 8:02 AM EDT
Recruiting Not applicable Interventional

Improving Adherence to Spinal Cord Injury Exercise Guidelines Using Smartphone Technology and E-coaching

NCT05424172
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Stage-I, Group 1: Self monitoring using Non-interactive App, Stage-I, Group 2: Self monitoring using Interactive App, Stage-II, Groups 1a/2a: E-Coaching 1x per month, Stage-II, Groups 1b/2b: E-Coaching 2x per month
Behavioral
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fitbit One and Text Messaging Prompts to Promote Physical Activity in Overweight/Obese Adults

NCT02188875
View directory record Official record
Conditions
Health Behavior, Obesity
Interventions
SMS Text Messages & Fitbit One, Fitbit One Only
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 69 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Oct 4, 2019 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional

Effect of a Secure Message Reminder on Hypertension Follow-up at an Integrated Health Care System

NCT01952119
View directory record Official record
Conditions
Hypertension
Interventions
Secure message reminder
Other
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years to 75 Years
Enrollment
182 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 27, 2013 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Static vs. Conversational AI-Generated Messages on Colorectal Cancer Screening Intent: a Randomized Controlled Trial

NCT07107152
View directory record Official record
Conditions
Colorectal Cancer Control and Prevention
Interventions
single GPT generated message, AI Chatbot, Expert-Written Patient Materials
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
45 Years to 75 Years
Enrollment
915 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Oct 27, 2026, 8:02 AM EDT
Not yet recruiting Not applicable Interventional

Pilot Study of Sensor-Informed Smartphone-based Mental Health Interventions for Mood in Early Psychosis

NCT07503093
View directory record Official record
Conditions
Psychosis, Anxiety, Depression, Rumination
Interventions
Smartphone-based Mindfulness Exercise, Smartphone-based Psychoeducation, Neutral Control Message
Behavioral
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Phase 4 Interventional Results available

Analysis of Adherence in Subjects Undergoing Differin Gel, 0.1% Treatment of Moderate to Severe Acne Vulgaris

NCT00696449
View directory record Official record
Conditions
Acne Vulgaris
Interventions
Adapalene, frequent visits, electronic reminder, Parent reminder, Standard of care
Drug · Behavioral
Lead sponsor
Wake Forest University
Other
Eligibility
13 Years to 18 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 10, 2018 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Results available

Pilot Testing a Digital Intervention to Improve Smoking Cessation in Persons With Serious Mental Illness

NCT04367506
View directory record Official record
Conditions
Tobacco Cessation
Interventions
BecomeAnEX, Usual Care
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Taxi STEP (Social Networks, Technology, and Exercise Through Pedometers)

NCT03010163
View directory record Official record
Conditions
Physical Conditioning
Interventions
Health Fair, Pedometer, Text Messaging, Social Network Support
Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years and older · Male only
Enrollment
290 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Good Oral Health - A Bi-level Intervention to Improve Older Adult Oral Health

NCT02419144
View directory record Official record
Conditions
Gingivitis
Interventions
AMI and campaigns
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
331 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 11, 2021 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Texting Atopic Dermatitis Patients to Optimize Learning and EASI Scores

NCT02779426
View directory record Official record
Conditions
Atopic Dermatitis
Interventions
Text messages
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
Up to 6 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 22, 2017 · Synced Oct 27, 2026, 8:02 AM EDT
Enrolling by invitation Not applicable Interventional

Increasing Uptake of EHR-enabled Population Health Outreach Strategies to Improve Diabetes Screening

NCT05730582
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Pre Diabetes
Interventions
Parkland Diabetes Detection Program (PDDP) Screening Invitation
Behavioral
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
500,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional

An M-Health Intervention in Rural Veterans

NCT03720054
View directory record Official record
Conditions
Veterans, Obesity, Overweight
Interventions
MapTrek, Fitbit
Behavioral
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 100 Years
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 26, 2019 · Synced Oct 27, 2026, 8:02 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Overcoming Racial Disparities in Screening Mammography

NCT07549139
View directory record Official record
Conditions
Breast Cancer, Cancer of the Breast
Interventions
Appointment mail reminder, Telephone counseling, Digital navigation video, Automated phone call
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
40 Years and older · Female only
Enrollment
176 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Development and Evaluation of an Electronic Health Record-based Medication Complete Communication (EMC2) Strategy

NCT03652272
View directory record Official record
Conditions
Medication Adherence
Interventions
EMC2
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
301 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 7, 2025 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

End Nicotine Dependence Clinic

NCT03290430
View directory record Official record
Conditions
Smoking Cessation
Interventions
Group Counseling, Individual Counseling, Phone Counseling, Video Counseling, Texting support, Nicotine Replacement Therapy
Behavioral · Drug
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 14, 2020 · Synced Oct 27, 2026, 8:02 AM EDT
Active, not recruiting Not applicable Interventional

Keep Social Randomized Controlled Trial for Young Adults With Cancer

NCT07788339
View directory record Official record
Conditions
Cancer
Interventions
Social connectedness intervention
Behavioral
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
22 Years to 39 Years
Enrollment
395 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Results available

Patient Portal Flu Vaccine Reminders_RCT 5 (LADHS)

NCT05535777
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Enhanced texts with Callback by a Person, Enhanced Bidirectional Texts
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months and older
Enrollment
246,295 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 11, 2025 · Synced Oct 27, 2026, 8:02 AM EDT
Active, not recruiting Not applicable Interventional

Nurturing Care Family Navigator

NCT06859372
View directory record Official record
Conditions
Food Insecurity Among Children, Food Insecurity in Post Partum Women, Care Coordination in Primary Care, Preventive Care / Anticipatory Guidance, Retention in Care
Interventions
Nurturing Care Family Navigator
Behavioral
Lead sponsor
University of Nevada, Las Vegas
Other
Eligibility
18 Years and older · Female only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Oct 27, 2026, 8:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Clinical Trial of Behavioral Modification to Prevent Congenital Cytomegalovirus

NCT01819519
View directory record Official record
Conditions
Cytomegalovirus Infections, Pregnancy, Behavior
Interventions
Educational Intervention
Behavioral
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
14 Years to 45 Years · Female only
Enrollment
223 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jun 3, 2015 · Synced Oct 27, 2026, 8:02 AM EDT