The Jiaxing Birth Cohort in China (JBC)

January 18, 2018 updated by: Duo li, Zhejiang University
The Jiaxing Birth Cohort (JBC) is the largest prospective cohort study to explore prenatal risk factors, early life feeding practice and growth pattern/ adiposity in Chinese children.Between 1999 and 2013, 338 413 mother-child pairs were recruited in Jiaxing area in south-east China.Children of the recruited women were followed up at 1-2, 3, 6, 9 and 12 months of age, and subsequently followed up every 6 months to 36 months of age (toddler stage), and every year to 6-7 years of age before they went to school (pre-school stage). Follow-up rate was 70.8% at the toddler stage and 68.9% at the pre-school stage up to June 2013.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Anticipated)

500000

Contacts and Locations

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

Study Contact

Study Contact Backup

Study Locations

  • China
    • Zhejiang
      • Hangzhou, Zhejiang, China, 310058
        • Recruiting
        • Zhejiang University
        • Contact:
        • Principal Investigator:
          • Duo Li, PhD

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

  • ADULT
  • OLDER_ADULT
  • CHILD

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Between 1999 and 2013, 363 416 pregnancies were followed from initial registration to the end of the pregnancy, with 25 003 children born to the above women having no further information (registration) after the birth. Therefore, a total of 338 413 live mother-child pairs registered at local clinics, and were enrolled in the Jiaxing Birth Cohort.

Among the 338 413 children, there were 332 532 singletons, 2883 pairs of twins (n = 5766), 37 pairs of triplets (n= 111), and 1 pair of quadruplets (n = 4).

Description

Inclusion Criteria:

  1. Pregnant women came to clinic visit at one of the local hospitals during pregnancy at Jiaxing area
  2. Pregnant women were followed up during pregnancy and their children were born alive at local hospital or clinics

Exclusion Criteria:

  1. Those who did not want to participant
  2. The infant was dead at the birth
  3. Those pregnant mothers who dropped out during follow-up at pregnancy or moved out of the Jiaxing area

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Mother-child birth cohort
Other: No intervention

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
overweight and obesity
Time Frame: Up to 6-7 years old for these children
BMI-z-score was calculated from height and weight. BMI-z-score>1 was defined as overweight/obesity
Up to 6-7 years old for these children

Collaborators and Investigators

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

Sponsor

Zhejiang University

Collaborators

Qingdao University
Westlake University
Jiaxing Maternity and Child Health Care Hospital

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)

January 1, 1999

Primary Completion (ANTICIPATED)

January 1, 2019

Study Completion (ANTICIPATED)

January 1, 2029

Study Registration Dates

First Submitted

June 18, 2017

First Submitted That Met QC Criteria

July 11, 2017

First Posted (ACTUAL)

July 14, 2017

Study Record Updates

Last Update Posted (ACTUAL)

January 23, 2018

Last Update Submitted That Met QC Criteria

January 18, 2018

Last Verified

January 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ZJU_JBC2013013

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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