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ClinicalTrials.gov public records Last synced Oct 18, 2026, 1:19 AM EDT

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Showing 1–24 of 361 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Text-only messages Clear all
Completed Not applicable Interventional

Increase HIV Testing Among Truck Drivers and Female Sex Workers in Kenya Through Offering HIV Self-Testing

NCT03662165
View directory record Official record
Conditions
HIV Testing
Interventions
Intervention, Enhanced Standard of Care, Traditional Standard of Care
Behavioral
Lead sponsor
City University of New York, School of Public Health
Other
Eligibility
18 Years and older
Enrollment
4,458 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 7, 2018 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Results available

Secondary Event Prevention Using Population Risk Management After PCI and for Anti-Rheumatic Medications

NCT02694185
View directory record Official record
Conditions
Myocardial Ischemia, Rheumatic Diseases
Interventions
Caplan IVR
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 95 Years
Enrollment
5,269 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
4
States / cities
San Francisco, California • Aurora, Colorado • Baltimore, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional

Nurtured in Nature

NCT04146025
View directory record Official record
Conditions
Postpartum Depression, Pregnancy Related, Environmental Exposure
Interventions
Nature Coach Intervention
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 24, 2020 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing the Persuasiveness of Pro-inoculation Arguments

NCT05804825
View directory record Official record
Conditions
Vaccination Hesitancy, Human Papillomavirus Vaccination, Vaccine Refusal
Interventions
Argument inoculation messages, Simple forewarning message
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
523 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Wearable mHealth Device to Promote Teenagers' Physical Activity

NCT02031185
View directory record Official record
Conditions
Physical Activity
Interventions
FitBit only, FitBit and Text Messages
Behavioral
Lead sponsor
Seattle Children's Hospital
Other
Eligibility
14 Years to 18 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Phase 2 Interventional Results available

DiaBetter Together for Young Adults With Type 1 Diabetes

NCT04247620
View directory record Official record
Conditions
Type 1 Diabetes
Interventions
DiaBetter Together, Peer Mentor Delivery
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
17 Years to 35 Years
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Brief Alcohol Screening for Community College Students (BASICCS)

NCT04052386
View directory record Official record
Conditions
Alcohol; Use, Problem
Interventions
BASICCS
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 29 Years
Enrollment
142 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 9, 2019 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional

Increasing Treatment for Obesity Among Underserved Populations

NCT05666323
View directory record Official record
Conditions
Obesity
Interventions
Single Text Messaging (TM1), Patient Navigation (PN), Multiple Text Messaging (TM+)
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 31, 2024 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Interventions to Help More Low-income Smokers Quit

NCT04311983
View directory record Official record
Conditions
Tobacco Use Cessation, Smoking Behaviors, Health Disparity
Interventions
Tobacco Quitline, Smoke Free Home
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
21 Years and older
Enrollment
1,973 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 10, 2024 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Smartphone Intervention for Relational and Mental Well Being

NCT04629755
View directory record Official record
Conditions
Depression, Loneliness, Relation, Interpersonal, Covid19
Interventions
Intervention
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
1,765 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 19, 2020 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Results available

Computer-delivered Screening & Brief Intervention for Marijuana Use in Pregnancy

NCT02191605
View directory record Official record
Conditions
Marijuana Use, Pregnancy
Interventions
eSBIRT, Tailored texting
Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 3, 2018 · Synced Oct 18, 2026, 1:19 AM EDT
Recruiting Not applicable Interventional

Expanding Exercise Programming for Veterans Through Telehealth

NCT05666167
View directory record Official record
Conditions
Arthritis
Interventions
Group Telehealth Exercise Sessions with text messaging plus booster sessions
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 18, 2026, 1:19 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 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Increasing Human Papillomavirus (HPV) Vaccine Uptake Via General Health Messaging

NCT03759236
View directory record Official record
Conditions
Human Papilloma Virus
Interventions
Health Messaging via SMS, CDC Health Pamphlets
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years and older · Female only
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 1, 2025 · Synced Oct 18, 2026, 1:19 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Testing a Gender-inclusive HIV Prevention Program

NCT06586151
View directory record Official record
Conditions
HIV Prevention
Interventions
Transcendent Health, Text Messaging with Information
Behavioral
Lead sponsor
Center for Innovative Public Health Research
Other
Eligibility
14 Years to 18 Years · Male only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
San Clemente, California
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Oct 18, 2026, 1:19 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Digital Support Intervention on Newly Licensed Nurses

NCT04100629
View directory record Official record
Conditions
Stress, Job Stress
Interventions
digital support: text messages
Behavioral
Lead sponsor
Duquesne University
Other
Eligibility
19 Years to 37 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
4
States / cities
Brawley, California • El Centro, California • San Diego, California + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2020 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cessation Clinical Trial

NCT06806098
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Truth Initiative Digital Cessation Program, Usual Care
Behavioral
Lead sponsor
Truth Initiative
Other
Eligibility
18 Years and older
Enrollment
1,555 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 18, 2026, 1:19 AM EDT
Enrolling by invitation Not applicable Interventional

Primary Care Referrals to a Remotely Delivered Physical Activity Intervention for Latina Teens: Chicas Fuertes 2

NCT06595056
View directory record Official record
Conditions
Physical Activity
Interventions
Multi-technology MVPA intervention
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
13 Years to 17 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Smartphone-Based Intervention to Improve Colorectal Cancer Screening in African American Men

NCT06052202
View directory record Official record
Conditions
Colorectal Cancer
Interventions
CRC mHealth, Control
Behavioral
Lead sponsor
ISA Associates, Inc.
Other
Eligibility
45 Years to 75 Years · Male only
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Alexandria, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 2, 2026 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Results available

Project SMART Automated Pillbox Study

NCT04418076
View directory record Official record
Conditions
HIV/AIDS, Cocaine Use
Interventions
Group A_No feedback, Group B_Automated feedback, Group C_Automated feedback + Clinician feedback, Group D_Automated feedback + Social Network feedback
Device
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 15, 2023 · Synced Oct 18, 2026, 1:19 AM EDT
Recruiting Not applicable Interventional

Refer2Quit: Evaluating a Proactive, Tailored, Population Health Approach for Tobacco Treatment for Household Smokers Through a Pediatric Care Network

NCT06582693
View directory record Official record
Conditions
Smoking, Smoking Cessation, Second Hand Tobacco Smoke
Interventions
Refer2Quit
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
18 Years and older
Enrollment
3,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional

A Study for Testing Text Messaging and Newsletter as a Strategy for Interrupting Sedentary Behavior

NCT03671499
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Social Cognitive Theory based text messages
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 64 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 29, 2019 · Synced Oct 18, 2026, 1:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Colorectal Cancer Screening in Alaska Native Men

NCT06436300
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Motivational text messaging
Behavioral
Lead sponsor
Washington State University
Other
Eligibility
40 Years to 75 Years · Male only
Enrollment
998 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Aug 29, 2025 · Synced Oct 18, 2026, 1:19 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 18, 2026, 1:19 AM EDT