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Showing 1–24 of 260 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Sexual Risk Behaviors Clear all
Completed Not applicable Interventional Accepts healthy volunteers

FASTLANE II: Reducing Sex, Drug, and Mental Health Risk

NCT04109014
View directory record Official record
Conditions
Methamphetamine Abuse, HIV/AIDS, Depression, Sex, Unsafe
Interventions
FASTLANE II
Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2022 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Positive Choice: Prevention for Positive Health

NCT00447707
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 Sep 14, 2026, 9:13 AM EDT
Completed Phase 3 Interventional

Behavioral Drug and HIV Risk Reduction Counseling in Methadone Patients in China

NCT00757744
View directory record Official record
Conditions
Opiate Dependence, HIV Infections
Interventions
Behavioral Drug and HIV Risk Reduction Counseling (BDRC), Drug counseling
Behavioral
Lead sponsor
Yale University
Other
Eligibility
20 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 29, 2020 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Results available

Improving Effective Contraceptive Use Among Opioid-maintained Women: Stage II

NCT02411357
View directory record Official record
Conditions
Contraceptive Usage, Opioid Dependence
Interventions
Treatment as usual, WHO contraception protocol, Incentives
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Feb 9, 2023 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

PrEP Point-of-Care Brief-Intervention for Adherence Among Young Men Who Have Sex With Men

NCT05353283
View directory record Official record
Conditions
Risk Reduction
Interventions
Motivational Interviewing Counselling, Point-of-care Urine Tenofovir Measurement
Behavioral · Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional

A Brief Intervention to Prevent Adolescent Dating Aggression Perpetration

NCT02080923
View directory record Official record
Conditions
Offensive Aggression, Sexual Aggression, Dating Violence Perpetration and Victimization
Interventions
Brief Motivational Interview
Behavioral
Lead sponsor
Boston University
Other
Eligibility
15 Years to 19 Years
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 20, 2017 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

An HIV Intervention for Black Men at Risk - The Enhanced Sexual Health Intervention for Men (ES-HIM)

NCT01641146
View directory record Official record
Conditions
HIV, Depression, Posttraumatic Stress Disorder
Interventions
Enhanced Sexual Health Intervention for Men (ES-HIM), Health Promotion (HP) Comparison Arm
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older · Male only
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
4
States / cities
Inglewood, California • Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 27, 2016 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safe Spaces 4 Sexual Health

NCT07133555
View directory record Official record
Conditions
HIV Counseling and Testing, HIV Risk Behavior, HIV Prevention
Interventions
Healthcare counseling service
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 49 Years · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Game Plan for PrEP

NCT04973267
View directory record Official record
Conditions
Human Immunodeficiency Virus Exposure, Alcohol; Harmful Use
Interventions
Game Plan for PrEP, Attention-Matched Control Lifestyle Habits Videos
Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years and older · Male only
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 27, 2024 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional

Providing PrEP, Hepatitis C Treatment, and MOUD Through Telemedicine at Greensboro SSP

NCT05108935
View directory record Official record
Conditions
Opioid Use, Opioid Use Disorder, Risk Reduction, Hiv, Hepatitis C
Interventions
Suboxone, Truvada, Mavyret
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Durham, North Carolina • Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 26, 2023 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Being Responsible for Ourselves HIV Risk Reduction for Black MSM

NCT02561286
View directory record Official record
Conditions
Human Immunodeficiency Virus Infection (HIV), Sexually Transmitted Disease (STD)
Interventions
BRO HIV Risk Reduction Intervention, Health Promotion Intervention
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older · Male only
Enrollment
595 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 28, 2015 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Community Intervention Trial for Youth (CITY) Study

NCT00164580
View directory record Official record
Conditions
HIV Infections
Interventions
Community-Level Intervention
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
15 Years to 25 Years · Male only
Enrollment
12,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 2004
U.S. locations
8
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2012 · Synced Sep 14, 2026, 9:13 AM EDT
Completed No phase listed Observational

Managerial Database II

NCT01322217
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
12 Years to 24 Years
Enrollment
513 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
5
States / cities
Aurora, Colorado • Baltimore, Maryland • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2017 · Synced Sep 14, 2026, 9:13 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

The Community Youth Development Study: A Test of Communities That Care

NCT01088542
View directory record Official record
Conditions
Substance Abuse, Juvenile Delinquency, Sexual Behavior, Criminal Behavior, Violence, Depression, Anxiety, Suicide, Sexually Transmitted Infection, Educational Attainment
Interventions
Communities That Care
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
10 Years and older
Enrollment
52,323 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2025
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 6, 2025 · Synced Sep 14, 2026, 9:13 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Risk Assessment of Long-Haul Truck Drivers

NCT00381992
View directory record Official record
Conditions
Gonorrhea, Chlamydia Infections, Hepatitis B, Hepatitis C, Diabetes Mellitus, Hypertension, Obesity, HIV Infections, Hyperlipidemia
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years and older
Enrollment
294 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

HIV Prevention With the Mentally Ill

NCT00643305
View directory record Official record
Conditions
HIV Infections
Interventions
Skills Building with Motivational Interviewing, Skills Building
Behavioral
Lead sponsor
Boston Medical Center
Other
Eligibility
19 Years and older
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 2, 2013 · Synced Sep 14, 2026, 9:13 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Adult Sexual Risk Behavior Among Women With a History of Childhood Sexual Abuse

NCT00653575
View directory record Official record
Conditions
HIV Infections, Child Abuse, Sexual
Interventions
Information-Motivation-Behavioral Skills model, Traumagenic Dynamics model
Behavioral
Lead sponsor
Syracuse University
Other
Eligibility
18 Years and older · Female only
Enrollment
481 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 14, 2013 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Technology-Based Prevention for Adolescents in Primary Care

NCT03489434
View directory record Official record
Conditions
Substance Use
Interventions
Intervention
Behavioral
Lead sponsor
Georgia State University
Other
Eligibility
14 Years to 18 Years
Enrollment
123 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 13, 2025 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Phase 3 Interventional

A Brief Marijuana Intervention for Adolescent Women - 1

NCT00227864
View directory record Official record
Conditions
Marijuana Abuse, Sexual Risk Behaviors
Interventions
Behavior Therapy, Treatment as Usual
Behavioral · Other
Lead sponsor
Butler Hospital
Other
Eligibility
15 Years to 24 Years · Female only
Enrollment
326 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Phase 2 Interventional

Reducing Sex-Related HIV Risk Behaviors in Patients Receiving Treatment for Opioid Dependence

NCT00548275
View directory record Official record
Conditions
Opiate Dependence, HIV Infections
Interventions
Enhanced Sexual Risk Management, Standard Sexual Risk Management
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
2
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 2, 2020 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Phase 1 Interventional

Telephone-delivered Behavioral Interventions to Reduce Risky Sexual Behavior in HIV-positive Late Middle-age and Older Adults

NCT01499706
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 Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional

Evaluation of the Effectiveness of the POWER Through Choices Program

NCT01565304
View directory record Official record
Conditions
Pregnancy, Sexually Transmitted Infections
Interventions
POWER Through Choices
Behavioral
Lead sponsor
Mathematica Policy Research, Inc.
Other
Eligibility
13 Years to 18 Years
Enrollment
1,039 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
3
States / cities
Bakersfield, California • Baltimore, Maryland • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Sep 22, 2015 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Providing Suboxone and PrEP Using Telemedicine

NCT04521920
View directory record Official record
Conditions
Opioid Use, Opioid-use Disorder, Risk Reduction, Hiv
Interventions
Suboxone, PrEP
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
3
States / cities
Charlotte, North Carolina • Durham, North Carolina • Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 8, 2023 · Synced Sep 14, 2026, 9:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Utilization of the Community Popular Opinion Leader (C-POL) Model in Alabama

NCT00260754
View directory record Official record
Conditions
Risk Behavior, Sexually Transmitted Diseases
Interventions
Community-Popular Opinion Leader Model, Diffusion of Innovations
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2005
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 30, 2006 · Synced Sep 14, 2026, 9:13 AM EDT