Reproductive Health of Couples of Childbearing Age: a Community Based Prospective Cohort Study (ReH-CP)

March 14, 2022 updated by: Zehong Zhou, Guangzhou Women and Children's Medical Center
This community based prospective cohort study was established to investigate the fecundability of couples of childbearing age. Data are collected regarding age, body mass index, education, menstrual regularity as well as childbearing history. Results of routine examination of leucorrhea, blood glucose, liver function of the female spouse, and semen analysis of the male spouse are obtained from the National Free Pre-conception Check-up Projects (NFPCP) in China. Couples recruited will be followed every 6 months for at least 1 year, and their time to pregnancy as well as behavior of seeking medical care would be recorded. Blood sample and/or information of antral follicle count would be collected from participants who fail to conceive after 12 months of attempts.

Study Overview

Status

Completed

Conditions

Detailed Description

Infertility is a heavy burden on families, with important implications for individuals and public health. In the last decades, the trend of delaying marriage and childbearing has further exacerbated the burden of infertility. From February 2010 to November 2011, a large-scale population-based cross-sectional study was conducted in northern and eastern China. It was reported that the overall prevalence of infertility was 15.5% among women 'at risk' of pregnancy, and 25.0% among women attempting to become pregnant in China. The prevalence of infertility was surprisingly high and aroused our great attention. To further explore the fecundability and associated risk factors in current China, this community based prospective cohort study was established. Recruitment will be performed at cites of National Free Pre-conception Check-up Projects (NFPCP). Besides of the information of sociodemographic characteristics and childbearing history of couples, their results of check-ups will also be obtained. By regular follow-ups, valid data of time to pregnancy will be collected. A prospective cohort would provide an opportunity to reveal the incidence of infertility, and explore the underlying risk factors of infertility, as well as the demand of assisted reproductive technology.

Study Type

Observational

Enrollment (Actual)

2313

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Guangdong
      • Guangzhou, Guangdong, China, 510623
        • Guangzhou Women And Children's Medical Center
      • Guangzhou, Guangdong, China, 510623
        • Tianhe District Maternal and Child Health Hospital
    • Hainan
      • Haikou, Hainan, China, 570100
        • Longhua District Maternal and Child Health Hospital
      • Haikou, Hainan, China, 571100
        • Qiongshan District Maternal and Child Health Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 50 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Couples of childbearing age from the cites of National Free Pre-conception Check-up Projects (NFPCP) in city of Guangzhou in Guangdong Province, or the city of Haikou in Hainan Province, will be recruited.

Description

Inclusion Criteria:

  • Couples who finish the national free pre-conception check-up
  • Couples who agree to receive follow-ups every half year for at least 1 year

Exclusion Criteria:

  • None

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to pregnancy
Time Frame: From date of recruitment until the date of last menstrual period when conceived, assessed up to 1 year
Assessed by calculate the intervals between last menstrual period when conceived and the timing of termination of contraception.
From date of recruitment until the date of last menstrual period when conceived, assessed up to 1 year

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Prevalence of infertility
Time Frame: After 1 year of follow-up
Infertility was defined according to the World Health Organization manual as failing to achieve pregnancy after at least 12 months of unprotected regular sexual intercourse.
After 1 year of follow-up

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Guangzhou Women and Children's Medical Center

Investigators

  • Principal Investigator: Zehong Zhou, MD, Guangzhou Women and Children's Medical Center, China

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 26, 2019

Primary Completion (Actual)

December 31, 2020

Study Completion (Actual)

December 31, 2021

Study Registration Dates

First Submitted

August 20, 2019

First Submitted That Met QC Criteria

August 23, 2019

First Posted (Actual)

August 28, 2019

Study Record Updates

Last Update Posted (Actual)

March 16, 2022

Last Update Submitted That Met QC Criteria

March 14, 2022

Last Verified

March 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 201925201

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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