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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Unplanned Pregnancy Clear all
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 17, 2026, 4:08 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Postplacental Insertion of Levonorgestrel-releasing Intrauterine System (LNG-IUS) After Cesarean vs. Interval Insertion

NCT00635362
View directory record Official record
Conditions
Healthy
Interventions
Levonorgestrel-releasing intrauterine system (LNG-IUS)
Device
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older · Female only
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced Sep 17, 2026, 4:08 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 17, 2026, 4:08 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Family Planning-based Partner Abuse Intervention to Reduce Unintended Pregnancy

NCT01459458
View directory record Official record
Conditions
Violence, Pregnancy
Interventions
Family Planning-based Partner Violence Intervention
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
16 Years to 29 Years · Female only
Enrollment
3,687 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Sep 17, 2026, 4:08 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Preconception Reproductive Knowledge Promotion (PREKNOP)

NCT01849900
View directory record Official record
Conditions
Pregnancy
Interventions
Knowing your body, Healthy Lifestyle
Other · Behavioral
Lead sponsor
Calvin College
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Grand Rapids, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Sep 17, 2026, 4:08 AM EDT
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 17, 2026, 4:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Levonorgestrel Intrauterine System For Emergency Contraception

NCT01539720
View directory record Official record
Conditions
Pregnancy, Unplanned, Pregnancy; Accident
Interventions
Ulipristal acetate, levonorgestrel IUS
Drug · Device
Lead sponsor
Planned Parenthood of the St. Louis Region and Southwest Missouri
Other
Eligibility
14 Years to 45 Years · Female only
Enrollment
274 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
3
States / cities
Atlanta, Georgia • Indianapolis, Indiana • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 19, 2024 · Synced Sep 17, 2026, 4:08 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Evaluating the Impact of CHOICE-AYA on Contraceptive Use, Continuation and Satisfaction

NCT05022134
View directory record Official record
Conditions
Contraception Behavior, Sexual Behavior, Reproductive Behavior
Interventions
CHOICE-AYA
Behavioral
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
14 Years to 21 Years · Female only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Optimizing a Multi-Modal Intervention to Reduce Health-Risking Sexual Behaviors: Component Selection

NCT04661566
View directory record Official record
Conditions
Sexually Transmitted Infections, Pregnancy, Unplanned, Military Personnel
Interventions
Basic Education ("Education"), Narrative Videos ("Narratives"), Skills Building Videos ("Skills"), Interactive Scenarios ("Scenarios"), Future Life Planning Tool ("Future"), Epidemiological Risk Scenario ("Risk")
Behavioral
Lead sponsor
Uniformed Services University of the Health Sciences
Federal
Eligibility
17 Years and older
Enrollment
549 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 4 Interventional

Nurse Family Partnership (NFP) Contraceptive Study

NCT00928538
View directory record Official record
Conditions
Pregnancy, Effective Contraceptive Use, Family Planning
Interventions
Enhanced NFP Care
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
15 Years to 45 Years · Female only
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
3
States / cities
Olympia, Washington • Seattle, Washington • Vancouver, Washington
Source: ClinicalTrials.gov public record
Updated Mar 29, 2016 · Synced Sep 17, 2026, 4:08 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 17, 2026, 4:08 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 17, 2026, 4:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

miPlan: A Trial of miPlan Intervention vs. Standard of Care

NCT02396602
View directory record Official record
Conditions
Unintended Pregnancy
Interventions
miPlan intervention
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
15 Years to 29 Years · Female only
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 24, 2016 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Use of an Algorithm to Determine IV Sedation Dosing During First-trimester Surgical Abortion

NCT01994317
View directory record Official record
Conditions
Pregnancy, Unplanned
Interventions
Algorithm, Standard care
Other
Lead sponsor
Planned Parenthood League of Massachusetts
Other
Eligibility
18 Years and older · Female only
Enrollment
196 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 16, 2015 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Mid-life Women: Preventing Unintended Pregnancy and STIs

NCT02330133
View directory record Official record
Conditions
Reproductive Health
Interventions
Women's Reproductive Health, Online sexual health content
Behavioral
Lead sponsor
Oregon Center for Applied Science, Inc.
Industry
Eligibility
25 Years to 55 Years · Female only
Enrollment
333 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 31, 2014 · Synced Sep 17, 2026, 4:08 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers Results available

Sexual Health Empowerment for Women's Health

NCT03984695
View directory record Official record
Conditions
Cervical Cancer, Breast Cancer, Contraceptive Usage, Sexually Transmitted Diseases
Interventions
SHE-WOMEN
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
279 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 17, 2026, 4:08 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 17, 2026, 4:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Optimizing the Floreciendo Sexual and Reproductive Health Workshop for Latina Teens and Female Caregivers: A Pilot

NCT06223165
View directory record Official record
Conditions
Sexual Risk Behavior, Sexually Transmitted Infections, Unplanned Pregnancy
Interventions
Floreciendo (Foundations, Condoms & Contraception, Family Strengthening, and Gender & Relationships), Floreciendo (Foundations, Condoms & Contraception, and Family Strengthening), Floreciendo (Foundations, Condoms & Contraception, Gender & Relationships), Floreciendo (Foundations, Family Strengthening, and Gender & Relationships), Floreciendo (Foundations and Condoms & Contraception), Floreciendo (Foundations and Family Strengthening), Floreciendo (Foundations and Gender & Partner Relationships), Floreciendo (Foundations)
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
14 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
4
States / cities
Chicago, Illinois • Cicero, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 17, 2026, 4:08 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 17, 2026, 4:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Addressing Reproductive Coercion in HEalth Settings - Kenya

NCT03534401
View directory record Official record
Conditions
Unintended Pregnancy, Family Planning, Intimate Partner Violence (IPV)
Interventions
ARCHES Kenya
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
15 Years to 49 Years · Female only
Enrollment
659 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2023 · Synced Sep 17, 2026, 4:08 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 17, 2026, 4:08 AM EDT
Completed No phase listed Observational

Relationship Between Postpartum Mood Disorders and Delivery Experience

NCT03004872
View directory record Official record
Conditions
Postpartum Period, Depression, Stress Disorders, Post-Traumatic
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older · Female only
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 11, 2019 · Synced Sep 17, 2026, 4:08 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 17, 2026, 4:08 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 17, 2026, 4:08 AM EDT