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20,000 women join study to uncover Abortion's impact on later pregnancies

NCT ID NCT04183829

Knowledge-focused Sponsor: National Research Institute for Family Planning, China Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study is following 20,000 women in China who had an induced abortion early in pregnancy (before 12 weeks). Researchers want to see if having an abortion in the past leads to more complications or problems in later pregnancies. The women will be tracked over time to compare their pregnancy outcomes with those who have not had a prior abortion. This is an observational study, meaning it only looks for patterns, not a treatment or cure.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If this study finds clear links, it could help doctors better counsel women about future pregnancy risks after an abortion.
What could go wrong
This is an observational study, not a treatment trial. It can show associations but not cause and effect, and results may take years to emerge.

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

About 20,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2019

Expected to finish

Jun 2028

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

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 who have induced abortion in early pregnancy (\<12 weeks of gestation)

Ages

18 to 40 years

Sex

Female participants only

Show 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 have induced abortion in early pregnancy (\<12 weeks of gestation). * permanent population and no tendency to move. * normal language expression and understanding ability, able to understand research content. * be able and willing to provide written informed consent and effective contact information, and be willing to cooperate with follow-up investigations. Exclusion Criteria: * above the age of 40 * with history of adverse pregnancy and childbirth

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Conditions

The condition(s) this trial relates to.

pregnancy loss, recurrent, susceptibility to, 1

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Abortion Reproductive health

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    10 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Changzhou Maternal and Child Health Hospital

    RECRUITING

    Changzhou, Jiangsu, China

  • Chongqing Health Center for Women and Children

    RECRUITING

    Chongqing, China

  • Daqing People's Hospital

    RECRUITING

    Daqing, Heilongjiang, 150000-160000, China

  • People's Hospital of Inner Mongolia Autonomous Region

    RECRUITING

    Hohhot, Mongolia Autonomous, China

  • Qingdao Maternal and Child Health Hospital

    COMPLETED

    Qingdao, Shandong, China

  • Shenzhen Luohu Maternity and Child Healthcare Hospital

    RECRUITING

    Shenzhen, China

  • Taiyuan Maternal and Child Health Hospital

    RECRUITING

    Taiyuan, Shanxi, China

  • Tanggu Maternal and Child Health Hospital

    COMPLETED

    Tanggu, Tianjin Municipality, China

  • Yangzhou Maternal and Child Health Hospital

    RECRUITING

    Yangzhou, Jiangsu, China

  • Zaozhuang Maternal and Child Health Hospital

    RECRUITING

    Zaozhuang, Shandong, China

  • Zhangjiakou Maternal and Child Health Hospital

    RECRUITING

    Zhangjiakou, Hebei, China

  • Zhongshan Boai Hospital

    RECRUITING

    Zhongshan, Guangdong, China

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