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Showing 1–14 of 14 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Message Exposure Clear all
Completed Not applicable Interventional Accepts healthy volunteers

A Neuroimaging Approach to Advance Mechanistic Understanding of Tobacco Use Escalation Risk Among Young Adult African American Vapers

NCT05829863
View directory record Official record
Conditions
Message Exposure
Interventions
educational message exposure
Behavioral
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 29 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Jul 21, 2026, 10:57 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Neuroimaging Approaches to Improve Prediction of Smoking Initiation and Nicotine Escalation in Young Adult ENDS Users

NCT05447325
View directory record Official record
Conditions
Message Exposure (Sequence: Regular Then Flavor), Message Exposure (Sequence: Flavor Then Regular), No Message Exposure (Control Condition)
Interventions
Exposure to Anti-Vaping Messages (generic themes then flavor-specific themes), Exposure to Anti-Vaping Messages (flavor-specific themes then generic themes), Exposure to Anti-Vaping Messages (no message exposure)
Behavioral
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 29 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Jul 21, 2026, 10:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

FluSAFE: Flu SMS Alerts to Freeze Exposure

NCT03274310
View directory record Official record
Conditions
Influenza, Acute Respiratory Infection, Influenza-like Illness
Interventions
Educational text messages
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
Not listed
Enrollment
1,918 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Jul 21, 2026, 10:57 AM EDT
Completed Not applicable Interventional

Reducing UV Exposure to Prevent Skin Cancer: Message Development & Testing

NCT03201120
View directory record Official record
Conditions
Behavior, Health
Interventions
Outdoor Sun Behavior, Indoor Tanning Behavior
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 49 Years
Enrollment
3,595 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Jul 21, 2026, 10:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Using Open Contest and Neuro-influence Experiment to Develop and Evaluate PrEP Promotion Messages for High Risk Men

NCT04166851
View directory record Official record
Conditions
HIV/AIDS
Interventions
PrEP campaign messages developed via open contest, PrEP campaign messages developed via social marketing approach
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older · Male only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 21, 2024 · Synced Jul 21, 2026, 10:57 AM EDT
Completed No phase listed Observational

The Feasibility of Text Messaging to Assess Secondhand Smoke Exposure Among Youngsters With Cancer or Sickle Cell Disease

NCT01591187
View directory record Official record
Conditions
Cancer, Sickle Cell Disease
Interventions
Text messaging, Questionnaire, Interviews
Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
10 Years to 17 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 4, 2015 · Synced Jul 21, 2026, 10:57 AM EDT
Completed Not applicable Interventional Results available

Can Exposure to Brief Messages Correct Misperceptions?

NCT05129592
View directory record Official record
Conditions
Beliefs
Interventions
Coherent corrective messages
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
21 Years to 99 Years
Enrollment
193 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 11, 2024 · Synced Jul 21, 2026, 10:57 AM EDT
Suspended No phase listed Observational Accepts healthy volunteers

HIV/STD Risk and PrEP Implementation Messaging Among Gay, Bisexual, and Other Men Who Have Sex With Men

NCT06183502
View directory record Official record
Conditions
Sexually Transmitted Infections, Gay, Pre Exposure Prophylaxis
Interventions
Quantitative survey, HIV and STI testing, Qualitative Assessment
Behavioral · Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years and older · Male only
Enrollment
1,275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
3
States / cities
San Diego, California • Atlanta, Georgia • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 1, 2025 · Synced Jul 21, 2026, 10:57 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

A Text Messaging Trial to Test Vaping Health Messages Optimized to Young Adults' Vaping Status

NCT07038317
View directory record Official record
Conditions
Vaping Behaviors, Message Exposure, Young Adults
Interventions
Intervention, Control
Other
Lead sponsor
University of Hawaii
Other
Eligibility
18 Years to 24 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Jul 21, 2026, 10:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Prior Exposure to Conflicting Health Information on Responses to Subsequent Unrelated Health Messages

NCT04247529
View directory record Official record
Conditions
Communication Research
Interventions
Exposure to conflicting health information, No exposure to conflicting health information
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
6,046 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 9, 2020 · Synced Jul 21, 2026, 10:57 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study for IFE4PrEP Intervention on PrEP Uptake by Southern African American Women

NCT05087927
View directory record Official record
Conditions
HIV Prevention
Interventions
Gain framing plus demographically targeted photos, Loss framing plus demographically targeted photos, Gain framing plus not demographically targeted photos, Loss framing plus not demographically targeted photos
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older · Female only
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Jul 21, 2026, 10:57 AM EDT
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers

Leveraging Video Logs as a Bridge to Pre-exposure Prophylaxis (PrEP) With Tailored Messaging to Black Women and Their Healthcare Providers in Texas.

NCT06864689
View directory record Official record
Conditions
HIV Prevention
Interventions
Video-log (vlog) series with videos tailored to cisgender Black women or to healthcare providers
Behavioral
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Jul 21, 2026, 10:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Randomized Controlled Trial of iTAB Plus Motivational Interviewing for PrEP Adherence in Transgender Individuals

NCT03086200
View directory record Official record
Conditions
Patient Adherence, HIV Seronegativity
Interventions
brief Motivational Interviewing
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
263 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
5
States / cities
Los Angeles, California • San Diego, California • Torrance, California
Source: ClinicalTrials.gov public record
Updated Sep 12, 2021 · Synced Jul 21, 2026, 10:57 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

CCTG 595: Text Messaging Intervention to Improve Adherence to PrEP in High-risk MSM

NCT01761643
View directory record Official record
Conditions
Patient Adherence, HIV Seronegativity
Interventions
SoC + iTab
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Male only
Enrollment
398 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
4
States / cities
Long Beach, California • Los Angeles, California • San Diego, California + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2020 · Synced Jul 21, 2026, 10:57 AM EDT