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ClinicalTrials.gov public records Last synced Sep 15, 2026, 10:35 AM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Text messaging boosters Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Harnessing the Power of Text Messaging to Invigorate AMSM HIV Preventive Behavior

NCT02113956
View directory record Official record
Conditions
HIV
Interventions
Guy2Guy (G2G)
Behavioral
Lead sponsor
Center for Innovative Public Health Research
Other
Eligibility
14 Years to 18 Years · Male only
Enrollment
302 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
2
States / cities
San Clemente, California • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 9, 2020 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional

Adaptive Intervention for Adolescents Following Inpatient Psychiatric Care

NCT05282225
View directory record Official record
Conditions
Suicide, Suicide, Attempted, Suicidal Ideation, Self Harm
Interventions
MI- Safety Plan, Texts messages, Monitoring, Portal follow-up, Booster call
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
13 Years to 17 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
3
States / cities
Ann Arbor, Michigan • Detroit, Michigan • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Buckle Me Up!: A Digital Emergency Department Discharge Intervention for Child Car Safety

NCT03799393
View directory record Official record
Conditions
Safety Issues, Injuries, Car Accident
Interventions
CIAS (Computer Intervention Authoring Software), Standard Printed Discharge Instructions
Behavioral
Lead sponsor
Lifespan
Other
Eligibility
Up to 21 Years
Enrollment
295 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Dec 8, 2021 · Synced Sep 15, 2026, 10:35 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Girl2Girl: A Web-based Trial

NCT04809155
View directory record Official record
Conditions
Pregnancy Prevention
Interventions
Girl2Girl
Behavioral
Lead sponsor
Center for Innovative Public Health Research
Other
Eligibility
14 Years to 18 Years · Female only
Enrollment
574 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Clemente, California
Source: ClinicalTrials.gov public record
Updated Mar 21, 2021 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Promoting Smoking Cessation in Carpenters

NCT01878214
View directory record Official record
Conditions
Smoking Cessation, Health Behavior, Cancer
Interventions
Targeted messaging, Standard messaging
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
442 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 3, 2014 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Behavioral Intervention in Reducing Indoor Tanning

NCT03448224
View directory record Official record
Conditions
Healthy Subject
Interventions
Questionnaire Administration, Internet-Based Intervention
Other
Lead sponsor
Jerod L Stapleton, PhD
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 21, 2020 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Prompt to Bundle COVID-19 Booster and Flu Shot

NCT05586165
View directory record Official record
Conditions
COVID-19, Vaccines
Interventions
Reminder to boost protection against COVID-19, Flu Tag Along, COVID-19 Booster & Flu Bundle
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
109,493 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Results available

Check It! 2.0: Positive Psychology Intervention for Adolescents With Type 1 Diabetes

NCT02984709
View directory record Official record
Conditions
Type1diabetes
Interventions
Positive Psychology Intervention, Education
Behavioral
Lead sponsor
Vanderbilt University
Other
Eligibility
13 Years to 17 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Message Communicating Latest Data on COVID-19 Transmission in Patient's Area

NCT05621226
View directory record Official record
Conditions
COVID-19
Interventions
COVID Booster text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
520,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 15, 2026, 10:35 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Motivating Campus Change Study

NCT04030325
View directory record Official record
Conditions
Drinking Behavior
Interventions
Sequential Personalized Feedback Intervention Delivery, Simultaneous Personalized Feedback Intervention Delivery, Text Message Boosters
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 24 Years
Enrollment
1,012 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 11, 2024 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Boost Intentions and Facilitate Action to Promote COVID-19 Booster Take-up

NCT05586204
View directory record Official record
Conditions
COVID-19, Vaccines
Interventions
Eligibility reminder, Link to a narrow set of vaccine venues, Link to a broad set of vaccine venues, Doctors' recommendation and value of vaccine
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
154,977 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 8, 2024 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

txt2protect: Using Text Messaging to Increase HPV Vaccination Among Young Sexual Minority Men

NCT02994108
View directory record Official record
Conditions
Human Papillomavirus
Interventions
txt2protect, Sexual Health Control
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 25 Years · Male only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 19, 2020 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional

Construal Level as a Novel Pathway for Affect Regulation and Cancer Control

NCT04620915
View directory record Official record
Conditions
Smoking Cessation, Smoking Reduction, Cancer
Interventions
High-level construal, Down-regulation of craving for cigarettes, Up-regulation of goal energization
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
25 Years to 55 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
2
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Message Offering Free Round Trip Ride-Share Ride to Pharmacy

NCT05612373
View directory record Official record
Conditions
COVID-19
Interventions
COVID Booster text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
300,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 15, 2026, 10:35 AM EDT
Not yet recruiting Not applicable Interventional

Advancing Scalable Alcohol Brief Interventions in the ED: A Trial of Conversational AI With Digital Reinforcements

NCT07661563
View directory record Official record
Conditions
Alcohol Misuse
Interventions
MICA, TRAC
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Online Intervention to Prevent Perinatal Depression and Promote Breastfeeding

NCT04128202
View directory record Official record
Conditions
Depression, Breastfeeding
Interventions
Sunnyside, Sunnyside Plus
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 25, 2021 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Life-Steps Counseling to Enhance Adherence and Engagement in PrEP Care

NCT04316715
View directory record Official record
Conditions
Adherence, Medication
Interventions
Lifesteps for PrEP, Daily text message reminders
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older · Male only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
2
States / cities
Miami, Florida • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 25, 2025 · Synced Sep 15, 2026, 10:35 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 Apr 7, 2026 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Message Encouraging Vaccination in Preparation for the Holidays

NCT05612360
View directory record Official record
Conditions
COVID-19
Interventions
COVID Booster text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
520,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Phase 4 Interventional Results available

Pre-exposure Prophylaxis (PrEP) Adherence Enhancement Guided by iTAB and Drug Levels for Women

NCT02584140
View directory record Official record
Conditions
HIV Prevention
Interventions
Text Messaging, Adherence Counseling, Daily Oral PrEP
Behavioral · Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older · Female only
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
5
States / cities
Los Angeles, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 7, 2021 · Synced Sep 15, 2026, 10:35 AM EDT
Recruiting Not applicable Interventional

Intensive Patient Referral and Education Program Prior to Renal Replacement Therapy

NCT06397456
View directory record Official record
Conditions
Chronic Kidney Disease, Hypertension
Interventions
In-Person Patient Education, Commitment to Change, Blood pressure monitoring, Written Patient Education, Text-based reinforcement for CKD self-management, Community-based education session, reinforcement for self-management, Text-based reinforcement for general health self-management
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 70 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional

Using mHealth to Improve Adherence and Reduce Blood Pressure in Individuals With Hypertension and Mood Disorders

NCT04675593
View directory record Official record
Conditions
Bipolar Disorder, Non-Adherence, Medication, Hypertension, Major Depressive Disorder
Interventions
iTAB-CV, Self-Monitoring
Behavioral
Lead sponsor
Case Western Reserve University
Other
Eligibility
21 Years to 80 Years
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Message From Local Pharmacy Team

NCT05613764
View directory record Official record
Conditions
COVID-19
Interventions
COVID Booster text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
520,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 15, 2026, 10:35 AM EDT
Completed Not applicable Interventional Results available

Tiny Cargo, Big Deal! An ED-Based Study of Child Passenger Safety Behaviors

NCT04238247
View directory record Official record
Conditions
Accident, Traffic
Interventions
Tiny Cargo, Big Deal/Abróchame Bien, Cuídame Bien (TCBD/ABCB) Basic Intervention, Tiny Cargo, Big Deal/Abróchame Bien, Cuídame Bien (TCBD/ABCB) Enhanced Intervention
Behavioral
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
6 Months to 10 Years
Enrollment
513 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 15, 2026, 10:35 AM EDT