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ClinicalTrials.gov public records Last synced Oct 20, 2026, 8:42 AM EDT

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Showing 73–96 of 633 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: No Messaging Clear all
Completed Not applicable Interventional Accepts healthy volunteers

2018 Intern Health Study Micro-randomized Trial

NCT03972293
View directory record Official record
Conditions
Depression, Mood, Sleep, Physical Activity
Interventions
Intern Health Study behavioral change mobile notification, Intern Health Study mobile app
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
Not listed
Enrollment
2,134 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 13, 2019 · Synced Oct 20, 2026, 8:42 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Initiative for Chinese Sex Workers to Promote Wellbeing and Improve HIV Prevention by Reducing intersEctional Stigma

NCT07103525
View directory record Official record
Conditions
HIV Prevention, Wellbeing
Interventions
INSPIRE Initiative, Standard of Care
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
3
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing Different Anti-smoking Messages Among Chinese Young Adult Smokers and Nonsmokers

NCT06730646
View directory record Official record
Conditions
Smoking Prevention
Interventions
Health effects, Tobacco industry manipulation, Secondhand smoke, Mentral health, Social acceptability, Control
Behavioral
Lead sponsor
Georgia State University
Other
Eligibility
18 Years to 25 Years
Enrollment
1,541 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Oct 20, 2026, 8:42 AM EDT
Recruiting Not applicable Interventional

Behavioral Intervention for Youth to Promote Vaping Cessation

NCT06765291
View directory record Official record
Conditions
Vaping, Vaping Teens, Nicotine Dependence
Interventions
QuitVaping, This is Quitting (TIQ)
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
14 Years to 19 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Recruiting Not applicable Interventional

A Mobile Patient Health Technology Intervention for Improving Lung Cancer Screening Rates in Eligible High Risk Patients

NCT07322367
View directory record Official record
Conditions
Lung Cancer
Interventions
Portal Message with Reminder Text Messages, Text Message with Reminder Text Messages, Portal message only, Usual Care
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
50 Years to 77 Years
Enrollment
27,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 25, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Recruiting Phase 2 Interventional

Using Smartphones to Improve Physical Activity Levels of Individuals With Spinal Cord Injury

NCT05317832
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
WI program, WI Program Reminder, JITAI Goal Setting, JITAI physical activity message, Notification EMA, End of day EMA, Wake up time EMA, Weekly PA Information, Daily PA Information
Behavioral · Other
Lead sponsor
Temple University
Other
Eligibility
18 Years to 75 Years
Enrollment
196 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional

Opioid Counseling Following Orthopaedic Surgery

NCT04138264
View directory record Official record
Conditions
Orthopedic Disorder
Interventions
Preoperative opioid counseling
Other
Lead sponsor
Rothman Institute Orthopaedics
Other
Eligibility
18 Years and older
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 24, 2019 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Mobile Phone App for Veterans With PTSD

NCT03199742
View directory record Official record
Conditions
Stress Disorders, Post-Traumatic, Veterans
Interventions
Personalized App Coaching, Active Comparator
Behavioral
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
18 Years and older
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Menlo Park, California
Source: ClinicalTrials.gov public record
Updated Apr 26, 2019 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

SCALE-UP Utah: Community-Academic Partnership to Address COVID-19 Vaccination Rates Among Utah Community Health Centers

NCT04939519
View directory record Official record
Conditions
Covid19
Interventions
Text-Messaging (TM), Patient Navigation (PN)
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
65,300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 12, 2025 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

HPV Vaccine Communication ECHO for Primary Care Clinics

NCT04587167
View directory record Official record
Conditions
Human Papillomavirus Vaccines, Adolescent Health Services
Interventions
Project ECHO, Announcement Approach Training, Recall notices
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Proximal Effects of Alcohol on Same-Sex Intimate Partner Violence

NCT04625465
View directory record Official record
Conditions
Alcohol Consumption, Violence, Domestic, Stress, Psychological, Aggression
Interventions
CBT Text Messaging, Attention Control Text Messaging
Behavioral
Lead sponsor
Georgia State University
Other
Eligibility
21 Years and older
Enrollment
474 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Oct 20, 2026, 8:42 AM EDT
Recruiting Not applicable Interventional

Strategies for Improving Linkage-to-Care After Eye Disease Screening

NCT06943599
View directory record Official record
Conditions
Age Related Macular Degeneration, Diabetic Retinopathy, Glaucoma
Interventions
Text Message Reminder, Health Worker Visit
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
60 Years and older
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional

SMS Education for Post-operative Pain

NCT04039191
View directory record Official record
Conditions
Opioid Use, Pain, Postoperative
Interventions
SMS education, SMS survey
Behavioral
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 2, 2023 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Results available

SCALE-UP Utah II: Community-Academic Partnership to Address COVID-19 Conversational Agent Study

NCT05533359
View directory record Official record
Conditions
COVID-19
Interventions
Text-Messaging (TM), Conversational Agent (CA), Patient Navigation (PN)
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
2,117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Oct 20, 2026, 8:42 AM EDT
Recruiting Not applicable Interventional

Optimizing Digital Health Technology Interventions to Increase Skill Acquisition and Utilization

NCT05473013
View directory record Official record
Conditions
Bulimia Nervosa, Bulimia, Binge Eating, Binge-Eating Disorder
Interventions
Behavioral Therapy for Eating Disorders, Skills Monitoring On, Automated Reminder Messages, JITAIs
Behavioral
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
264 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Conversations With AI Chatbots Increase Short-Term Vaccine Intentions But Do Not Outperform Standard Public Health Messaging

NCT07132125
View directory record Official record
Conditions
HPV Vaccination Intent
Interventions
Default-style LLM chatbot, Conversational-style LLM chatbot, Public health informational materials
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
930 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 20, 2025 · Synced Oct 20, 2026, 8:42 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Adaptive Intervention Strategies for HIV PrEP Care in Rural People Who Inject Drugs

NCT06666309
View directory record Official record
Conditions
HIV Prevention
Interventions
SBCM-PrEP + Text Messaging, CDC-PrEP + Text Messaging, T-SBCM, Mobile Outreach
Behavioral
Lead sponsor
Hilary L Surratt, PhD
Other
Eligibility
18 Years and older
Enrollment
424 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
4
States / cities
Barbourville, Kentucky • Lexington, Kentucky • Manchester, Kentucky + 1 more
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional

Improving Drug Adherence Among Adolescents in Uganda Using SMS Reminders

NCT02128087
View directory record Official record
Conditions
Human Immunodeficiency Virus
Interventions
Two-way SMS intervention, One-way SMS intervention group
Behavioral
Lead sponsor
RAND
Other
Eligibility
15 Years to 24 Years
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2017 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Computer Assisted Family Intervention to Treat Self-Harm Disparities in Latinas and Sexual/Gender Minority Youth

NCT03709472
View directory record Official record
Conditions
Self Harm, Depression, Emotion Dysregulation, Suicidal Ideation, Family Relations
Interventions
Computer Assisted CIFFTA, Behavioral: Traditional face-to-face treatment-no technology
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
11 Years to 18 Years
Enrollment
172 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Coral Gables, Florida
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Oct 20, 2026, 8:42 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 20, 2026, 8:42 AM EDT
Recruiting Not applicable Interventional

Steps Towards Osteoarthritis Prevention

NCT06193343
View directory record Official record
Conditions
Anterior Cruciate Ligament Injuries
Interventions
Adaptive Daily Step Promotion
Behavioral
Lead sponsor
University of Georgia
Other
Eligibility
16 Years to 40 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional

Centralized IIS-based Reminder/Recall to Increase Childhood Influenza Vaccination Rates_2nd Trial in Colorado

NCT03246100
View directory record Official record
Conditions
Reminder Systems, Influenza Vaccines
Interventions
Reminders
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 17 Years
Enrollment
25,531 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 24, 2019 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional

Increasing Medication Adherence Through Physician Incentives and Messaging

NCT01603329
View directory record Official record
Conditions
Medication Adherence
Interventions
Increasing Medication Adherence through Physician Incentives and Messaging
Other
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
65 Years and older
Enrollment
734 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 23, 2015 · Synced Oct 20, 2026, 8:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nudges and Incentives to Enhance the Opioid Treatment Workforce

NCT03834025
View directory record Official record
Conditions
Opioid Abuse (Disorder)
Interventions
Phase 1 Condition 1, Phase 1 Condition 2, Phase 1 Condition 3, Phase 1 Condition 4, Phase 2 Condition 1, Phase 2 Condition 2, Phase 2 Condition 3
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 20, 2021 · Synced Oct 20, 2026, 8:42 AM EDT