New study reveals pregnancy risk when starting IUD or implant after unprotected sex
NCT ID NCT02076217
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at 270 women who had unprotected sex and then started a highly effective birth control method (like an IUD or implant) 6 to 14 days later. The goal was to find out how many got pregnant in the first month. The results help doctors and patients understand the risk of pregnancy when starting contraception after a delay.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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270 people
The number who actually took part.
- Started
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Feb 2014
- Finished
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Oct 2021
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Women presenting to IRB approved clinics requesting highly effective contraception (an IUD, Nexplanon®, or Depo-Provera) .
- Ages
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15 to 45 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Women between the ages of 15 and 45 years who request injectable, subdermal, or intrauterine contraception, 6-14 days after having unprotected intercourse. Exclusion Criteria: * History of tubal ligation or hysterectomy. * Positive urine pregnancy test
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Planned Parenthood Association of Utah
West Valley City, Utah, 84119, United States
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Other studies related to the condition(s) this trial covers.
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