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ClinicalTrials.gov public records Last synced Oct 23, 2026, 8:45 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 241–264 of 458 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Efficacy Message Clear all
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Implementing Tobacco Treatment in Low Dose CT Lung Cancer Screening Sites

NCT03315910
View directory record Official record
Conditions
Smoking Cessation
Interventions
Motivational Interviewing (MI), Nicotine Replacement Therapy (NRT), Nicotine Lozenge, Message Framing, saliva sample
Behavioral · Drug · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
50 Years to 80 Years
Enrollment
807 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
18
States / cities
Los Angeles, California • Walnut Creek, California • La Grange, Georgia + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sexual Health Texting Intervention to Support Adolescent Females

NCT02419690
View directory record Official record
Conditions
Teen Sexual Health
Interventions
text message intervention
Behavioral
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
13 Years to 18 Years · Female only
Enrollment
244 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 10, 2020 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional

Effectiveness of Home-Based Health Messaging for Patients With Hypertension and Diabetes

NCT00119054
View directory record Official record
Conditions
Diabetes Mellitus, Hypertension
Interventions
In Home Health Messaging Device
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
Not listed
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 7, 2015 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional

Teens-Connect: Preventive Psycho-education for Transitioning Teens With Diabetes

NCT01783327
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Teens-Connect, Planet D
Behavioral
Lead sponsor
Yale University
Other
Eligibility
11 Years to 14 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
2
States / cities
New Haven, Connecticut • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 8, 2016 · Synced Oct 23, 2026, 8:45 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Decision Support Tool to Integrate PrEP Into Emergency Departments

NCT07279129
View directory record Official record
Conditions
HIV
Interventions
Decision support tool, PrEP Delivery
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

MiVacunaLA: an Intervention to Improve COVID-19 Vaccination Behaviors Among Latinos

NCT05234372
View directory record Official record
Conditions
COVID-19 Pandemic
Interventions
mivacunaLA
Behavioral
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
468 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
2
States / cities
Los Angeles, California • Malibu, California
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Oct 23, 2026, 8:45 PM EDT
Not yet recruiting Not applicable Interventional

AI-Enhanced App-based Intervention for Adolescent E-cigarette Cessation

NCT06965296
View directory record Official record
Conditions
Nicotine Dependence, Cigarettes
Interventions
AI-enhanced smartphone app, AI-enhanced smartphone app, but with delayed access
Behavioral
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
14 Years to 20 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Recruiting Not applicable Interventional

Designing Effective Alcohol Health Warnings: An Experimental Study With Adults in the U.S.

NCT07812545
View directory record Official record
Conditions
Risk Perceptions, Decision Making, Alcohol
Interventions
Health warning statement evaluations (bottles), Health warning statement evaluations (ads)
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Evaluation of Thiwáhe Gluwáš'Akapi Substance Use Prevention Program

NCT04222556
View directory record Official record
Conditions
Substance Use, Substance Abuse, Suicide
Interventions
Thiwáhe Gluwáš'akapi, Woyute Waśte
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
10 Years to 85 Years
Enrollment
552 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 22, 2023 · Synced Oct 23, 2026, 8:45 PM EDT
Not listed Not applicable Interventional

Peer-led and Telehealth Comparative Effectiveness Research (CER) Adoption for Diabetes Prevention and Management

NCT01307137
View directory record Official record
Conditions
Diabetes, Pre-diabetes
Interventions
Peer-led intervention, Telehealth Intervention
Behavioral
Lead sponsor
South Florida Veterans Affairs Foundation for Research and Education
Federal
Eligibility
60 Years and older
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
2
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 2, 2011 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional Results available

Reducing Hopelessness Through Improved Physical Activity in Adults With Heart Disease: With COVID-19 Considerations

NCT03907891
View directory record Official record
Conditions
Ischemic Heart Disease, Hopelessness, Physical Activity, Motivation, Social Support, Covid19
Interventions
Motivational social support from nurse, Motivational social support from nurse with additional support from significant other, Attention control
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Grand Rapids, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 13, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Neural Mechanisms of Interpersonal Expectations on Negative Affect

NCT06980090
View directory record Official record
Conditions
Negative Affectivity, Non-invasive Brain Stimulation, Placebo Effect, Expectations
Interventions
Session A: Positive Placebo + Active tTIS, Session B: Positive Placebo + Sham tTIS, Session C: Negative Placebo + Active tTIS, Session D: Negative Placebo + Sham tTIS, Session E: On-Placebo + Sham tTIS, Session F: Off-Placebo + Sham tTIS
Behavioral
Lead sponsor
Trustees of Dartmouth College
Other
Eligibility
18 Years to 55 Years
Enrollment
196 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Hanover, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Phase 4 Interventional

The Long-Term Quitting (Smoking Cessation) Study

NCT02564315
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Mini-Lozenge for 11 Months, Preparation Phase Behavioral Reduction Counseling, Preparation Phase Recycling Counseling, Preparation Phase Control Treatment, Cessation Phase Supportive Counseling, Cessation Phase Skill Training Counseling, Cessation Phase Brief Information, Cessation Phase Nicotine Patch + Nicotine Mini-Lozenge
Drug · Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 17, 2020 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional

Motivational Interviewing Intervention for Intimate Partner Violence

NCT01410669
View directory record Official record
Conditions
Self-efficacy
Interventions
Motivational interviewing (MI)
Behavioral
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older · Female only
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 5, 2011 · Synced Oct 23, 2026, 8:45 PM EDT
Active, not recruiting Not applicable Interventional

Promoting Preconception Care and Diabetes Self-Management Among Reproductive-Aged Women With Diabetes

NCT04976881
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Electronic Health Record, Primary Health Care, Reproductive Behavior
Interventions
Medication Reconciliation (MedRec) Tool, Provider Alert and Decision Support, PREPSheet, Text Messaging
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
840 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional

Mobile Health App to Reduce Diabetes in Latina Women With Prior Gestational Diabetes II

NCT05489172
View directory record Official record
Conditions
Gestational Diabetes Mellitus
Interventions
Hola Bebe
Behavioral
Lead sponsor
Environment and Health Group, Inc.
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
3
States / cities
Cambridge, Massachusetts • Jamaica Plain, Massachusetts • Lynn, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 22, 2023 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Optimizing a Digital AEP Risk Intervention With Native Women and Communities

NCT06324929
View directory record Official record
Conditions
Alcohol Exposed Pregnancy, Unplanned Pregnancy, Alcohol Use, Unspecified, Contraception Use, Sexual Behavior
Interventions
CARRII Native Rapid Pilot Testing
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
407 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional

PositiveLinks: mHealth for DC Cohort

NCT04998019
View directory record Official record
Conditions
HIV/AIDS
Interventions
PositiveLinks
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
16 Years and older
Enrollment
682 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
13
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 19, 2025 · Synced Oct 23, 2026, 8:45 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Family Intervention to Prevent Childhood Obesity

NCT05606731
View directory record Official record
Conditions
Childhood Obesity
Interventions
Family-Based Childhood Obesity Intervention
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
2 Years and older
Enrollment
408 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Text-based Interventions to Promote COVID-19 Vaccinations

NCT04800965
View directory record Official record
Conditions
Covid19, Vaccines
Interventions
Patient MyChart Scheduling Link, Patient Educational Video, Enhanced Follow through Message
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
200,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Westwood, Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 13, 2022 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Personalized Behavioral Intervention to Improve Physical Activity, Sleep and Cognition in Sedentary Older Adults

NCT03959202
View directory record Official record
Conditions
Sleep
Interventions
ELDERFITNESS, Control
Behavioral · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
60 Years to 85 Years
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 8, 2023 · Synced Oct 23, 2026, 8:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Health Care Workers and Mental Health

NCT05028075
View directory record Official record
Conditions
Depressive Symptoms, Anxiety, Well-Being
Interventions
Cobalt +
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
1,275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Oct 23, 2026, 8:45 PM 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 28, 2024 · Synced Oct 23, 2026, 8:45 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Free Time For Wellness 2+

NCT06654843
View directory record Official record
Conditions
Physical Inactivity
Interventions
Comparator Arm, Enhanced intervention arm
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
630 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
10
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 12, 2025 · Synced Oct 23, 2026, 8:45 PM EDT