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Showing 1–24 of 48 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Unintended Pregnancy Clear all
Completed No phase listed Observational Accepts healthy volunteers

KYleena Satisfaction Study / Observational Study on User Satisfaction With the Levonorgestrel Intrauterine Delivery System Kyleena (LNG-IUS 12) in New Contraceptive Users and After Switching From Another Contraceptive Method

NCT03182140
View directory record Official record
Conditions
Contraception
Interventions
Kyleena
Drug
Lead sponsor
Bayer
Industry
Eligibility
Female only
Enrollment
1,134 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
12
States / cities
Lakewood, Colorado • Sarasota, Florida • Wellington, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2021 · Synced Sep 11, 2026, 8:23 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Attitudes and Decision-making After Pregnancy Testing Study

NCT03888404
View directory record Official record
Conditions
Unintended Pregnancy, Undesired Pregnancy
Interventions
Pregnancy preferences (Aim 1), Sociocultural environment (Aim 2), Pregnancy preferences (Aim 3a), Pregnancy (Aim 3b)
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
15 Years to 34 Years · Female only
Enrollment
2,015 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Emergency Contraception (ECP): Reducing Unintended Pregnancies

NCT00067509
View directory record Official record
Conditions
Contraception, Pregnancy
Interventions
emergency contraception (estrogen/progesterone)
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
15 Years to 39 Years · Female only
Enrollment
1,100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2004
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Behavioral Intervention for Minority Adolescent Women

NCT01387646
View directory record Official record
Conditions
Sexually Transmitted Infection, Substance Use, Abuse, Pregnancy
Interventions
Project IMAGE
Behavioral
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
14 Years to 18 Years · Female only
Enrollment
562 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 3, 2011 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Hormonal Contraceptive Health Education for Adolescent Males

NCT03400410
View directory record Official record
Conditions
Contraception Behavior
Interventions
Education Arm
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
15 Years to 21 Years · Male only
Enrollment
107 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 26, 2024 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Results available

Health-E You: Reducing Unintended Pregnancies Among Hispanic Adolescents

NCT02847858
View directory record Official record
Conditions
Unprotected Sex, Unsafe Sex
Interventions
Health-E You: a computer-based intervention to improve the use of effective contraception among Hispanic adolescents
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
14 Years to 18 Years · Female only
Enrollment
1,360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 22, 2019 · Synced Sep 11, 2026, 8:23 AM 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 9, 2020 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Phase 2 Interventional

Project CHOICES Efficacy Study

NCT00153478
View directory record Official record
Conditions
Risk for an Alcohol-Exposed Pregnancy, Hazardous Alcohol Use, Risk for Unintended Pregnancy
Interventions
Brief Motivational Counseling
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 44 Years · Female only
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
11
States / cities
Fort Lauderdale, Florida • Dayton, Texas • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2005 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Peer Mentoring on Adolescent Contraceptive Decision Making

NCT02157285
View directory record Official record
Conditions
Peer Counseling, LARC Desire
Interventions
Peer Mentor Counseling
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
13 Years to 21 Years · Female only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 5, 2014 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional

The Young Woman's Reach Project: Trial of an Intervention to Impact Contraceptive Behavior, Unintended Pregnancy, and Sexually Transmitted Infections (STIs) Among Adolescent Females

NCT00230880
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 Sep 11, 2026, 8:23 AM EDT
Completed Phase 1 Interventional

Improving Effective Contraceptive Use Among Opioid-maintained Women

NCT01425060
View directory record Official record
Conditions
Contraceptive Usage, Opioid Dependence
Interventions
Contraceptive management program, Usual care
Behavioral · Other
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 16, 2015 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Use of Motivational Interviewing to Increase Contraception Use Among Young Women

NCT01881321
View directory record Official record
Conditions
Unplanned Pregnancy
Interventions
Counseling Intervention
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
15 Years to 29 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 29, 2014 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Providing Birth Control Through Home Health Visits

NCT00065078
View directory record Official record
Conditions
Pregnancy
Interventions
Home dispensing of contraception, Family Planning Counseling
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
Female only
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Oregon City, Oregon
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 11, 2026, 8:23 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Michigan Contraceptive Access, Research, and Evaluation Study: Phase 1

NCT03673007
View directory record Official record
Conditions
Pregnancy
Interventions
Gift card to be used for contraceptives that is valued at 50% of cost of name-brand IUD (August 26, 2018-March 3, 2019), Gift card to be used for contraceptives that is valued at 100% of cost of name-brand IUD (March 4, 2019-March 31, 2023)
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
4,633 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2028
U.S. locations
9
States / cities
Ann Arbor, Michigan • Detroit, Michigan • Ferndale, Michigan + 6 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Maintaining Intrauterine Devices (IUDs) in Teens (MINT): A Randomization Trial

NCT00653159
View directory record Official record
Conditions
Contraception
Interventions
Levonorgestrel-releasing intrauterine device (LNG-IUS), Copper T380A intrauterine device (CuT380A)
Device
Lead sponsor
University of Chicago
Other
Eligibility
14 Years to 18 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Heart to Heart: Testing a Sexual Health Training for Foster and Kinship Caregivers

NCT03331016
View directory record Official record
Conditions
Sexual Behavior, Conflict, Family, Pregnancy Related, Sexually Transmitted Diseases, Family and Household
Interventions
Heart to Heart Training
Behavioral
Lead sponsor
Seattle Children's Hospital
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
2
States / cities
Pasadena, California • Sylmar, California
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Development and Testing of a Clinic-Based Intervention to Increase Dual Protection Against Unintended Pregnancy and Sexually Transmitted Diseases (STDs) Among High Risk Female Teens

NCT02291224
View directory record Official record
Conditions
Pregnancy, Sexually Transmitted Diseases
Interventions
Interactive multimedia platform, Intervention arm counseling, Standard of care counseling
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
14 Years to 19 Years · Female only
Enrollment
709 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 26, 2018 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Long-Acting Reversible Contraception

NCT01299116
View directory record Official record
Conditions
Contraception
Interventions
DMPA, oral contraceptives, Implanon®, ParaGard®, Mirena®
Drug
Lead sponsor
FHI 360
Other
Eligibility
18 Years to 29 Years · Female only
Enrollment
916 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2016
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 27, 2018 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Improving the Reproductive Health of Families

NCT03858803
View directory record Official record
Conditions
Reproductive Health
Interventions
Families Matter 2, Living as a Safer Teen
Behavioral
Lead sponsor
Portland State University
Other
Eligibility
13 Years to 80 Years
Enrollment
945 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 16, 2025 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Healthy Relationships Program for Vulnerable Youth

NCT03736876
View directory record Official record
Conditions
Pregnancy, Unplanned, Sexually Transmitted Diseases
Interventions
About Us
Behavioral
Lead sponsor
ETR Associates
Other
Eligibility
14 Years to 18 Years
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
3
States / cities
Oakland, California • San Diego, California • Scotts Valley, California
Source: ClinicalTrials.gov public record
Updated Mar 23, 2022 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Usefulness of Home Pregnancy Testing

NCT00390754
View directory record Official record
Conditions
Fertility
Interventions
Education for pregnancy planning
Behavioral
Lead sponsor
Michigan State University
Other
Eligibility
18 Years to 34 Years · Female only
Enrollment
198 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
East Lansing, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 28, 2008 · Synced Sep 11, 2026, 8:23 AM EDT
Completed Not applicable Interventional Results available

MyNewOptions: An Online Study of Reproductive Life Planning and Contraceptive Action Planning

NCT02100124
View directory record Official record
Conditions
Contraceptive Use, Unintended Pregnancy
Interventions
Reproductive Life Planning (RLP), Contraceptive Action Planning, Contraception information
Behavioral
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
987 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 10, 2018 · Synced Sep 11, 2026, 8:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the Reliability, Validity, and Acceptability of the London Measure of Unplanned Pregnancy in a U.S. Population of Women

NCT00306007
View directory record Official record
Conditions
Unplanned Pregnancy
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
15 Years to 45 Years · Female only
Enrollment
320 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 24, 2013 · Synced Sep 11, 2026, 8:23 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 11, 2026, 8:23 AM EDT