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ClinicalTrials.gov public records Last synced May 21, 2026, 10:00 PM EDT

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

Showing 25–45 of 21 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Unprotected Sex Clear all
Completed Phase 4 Interventional
View directory record Official record
Conditions
Prevention of Drug Abuse and Dependency, Alcohol Abuse and Dependency, High Risk Sex Behavior, Smoking Tobacco, School Failure
Interventions
whole day first grade program
Behavioral
Lead sponsor
American Institutes for Research
Other
Eligibility
Not listed
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 13, 2008 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Alcohol; Harmful Use, Sex, Unsafe
Interventions
MI&TXT4MSM
Behavioral
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
21 Years to 50 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Post Traumatic Stress Disorders, Unsafe Sex, Substance Use Disorders
Interventions
Cognitive Processing Therapy-Cognitive
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Toppenish, Washington
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sexual Behavior, Unprotected Sex
Interventions
Manhood 2.0, Post-High School Readiness
Behavioral
Lead sponsor
Child Trends
Other
Eligibility
15 Years to 18 Years · Male only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced May 21, 2026, 10:00 PM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Emergency Contraception
Interventions
CDB-2914
Drug
Lead sponsor
HRA Pharma
Industry
Eligibility
18 Years and older · Female only
Enrollment
1,623 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
17
States / cities
San Jose, California • Denver, Colorado • Miami, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2021 · Synced May 21, 2026, 10:00 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Unsafe Sex
Interventions
1-session of telephone-administered motivational interviewing, 4-session telephone-administered motivational interviewing
Behavioral
Lead sponsor
Ohio University College of Osteopathic Medicine
Other
Eligibility
45 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Athens, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 25, 2011 · Synced May 21, 2026, 10:00 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Economic Hardship, Condomless Sex, Utilization, Health Care
Interventions
Job announcements plus HIV prevention text messages, educational sessions, economic resources, and mentoring., Job announcements
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 24 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
HIV Infections, Sexual Risk Behavior, Substance Use Risks
Interventions
Positive Choice
Behavioral
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years and older
Enrollment
497 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
5
States / cities
Oakland, California • San Francisco, California • San Leandro, California
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Unprotected Sex, Contraceptive Usage
Interventions
Pulse
Behavioral
Lead sponsor
Child Trends
Other
Eligibility
18 Years to 20 Years · Female only
Enrollment
2,317 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced May 21, 2026, 10:00 PM EDT
Not listed Not applicable Interventional
View directory record Official record
Conditions
HIV Seropositivity
Interventions
Telephone-Administered Motivational Interviewing Plus Behavioral Skills Training, Telephone-Administered Coping Effectiveness Training
Behavioral
Lead sponsor
Oregon Health and Science University
Other
Eligibility
50 Years and older
Enrollment
343 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced May 21, 2026, 10:00 PM EDT
Withdrawn Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Substance-related Disorders, Depression, High-risk Sex
Interventions
iSBIRT, iSBIRT/TE
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
12 Years to 21 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 6, 2016 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
HIV Infections
Interventions
Project ICARE, HCT
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years and older · Male only
Enrollment
275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 10, 2010 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Contraceptive Behavior, Sexually Transmitted Diseases
Interventions
follow-up phone counseling
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
14 Years to 18 Years · Female only
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 4, 2012 · Synced May 21, 2026, 10:00 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Condomless Sex, Sexual Assault
Interventions
Promoting Assertive Communication among Teens (PACT), Healthy Minds
Other
Lead sponsor
North Carolina Agriculture & Technical State University
Other
Eligibility
14 Years to 17 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Unsafe Sex, Risk Reduction
Interventions
PROJECT POWER, Power Health
Behavioral
Lead sponsor
Nova Southeastern University
Other
Eligibility
18 Years to 60 Years · Male only
Enrollment
211 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 10, 2014 · Synced May 21, 2026, 10:00 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Pregnancy
Interventions
Copper T380 IUD, Oral levonorgestrel
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 30 Years · Female only
Enrollment
548 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
2
States / cities
Salt Lake City, Utah • West Valley City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 5, 2017 · Synced May 21, 2026, 10:00 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Condomless Sex, Human Immunodeficiency Virus (HIV), Sexually Transmitted Infection (STI), Alcohol and Drug Use
Interventions
Face-to-Face Young Women's CoOp (YWC), mHealth Young Women's CoOp (YWC), HIV Counseling and Testing
Behavioral
Lead sponsor
RTI International
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
652 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
4
States / cities
Durham, North Carolina • Greensboro, North Carolina • High Point, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced May 21, 2026, 10:00 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Binge Drinking, Unsafe Sex, HIV/AIDS, Sexually Transmitted Diseases
Interventions
Alcohol Administration, Placebo Alcohol Administration, No Alcohol Administration
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years to 35 Years · Male only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jul 20, 2017 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sexual Behavior, Unprotected Sex, Gonorrhea, Chlamydia, Trichomonas, Sexually Transmitted Diseases, Adolescent Behavior, Self Evaluation
Interventions
Sexual Health Risk Assessment, Sexual Health Score, Sexual Health Messaging, Water SSB Quiz, Water SSB Score, Water SSB Messaging, STI Screening
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
14 Years to 26 Years
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Whiteriver, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 22, 2024 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Sexually Active
Interventions
Text Message
Other
Lead sponsor
Boston Medical Center
Other
Eligibility
13 Years to 21 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 9, 2012 · Synced May 21, 2026, 10:00 PM EDT
Not listed Not applicable Interventional
View directory record Official record
Conditions
Sexual Behavior, Unprotected Sex
Interventions
Many Ways of Being, an innovative sexual health promotion program focused on addressing rigid gender norms and promoting healthy relationships, A career readiness program
Behavioral
Lead sponsor
Child Trends
Other
Eligibility
15 Years to 19 Years
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Nov 20, 2023 · Synced May 21, 2026, 10:00 PM EDT