the Effect of Universal Salt Iodization on Thyroid Diseases

May 4, 2013 updated by: Weimin Xu
  1. acquire the environmental iodine status of Hangzhou
  2. acquire the iodine status of population in Hangzhou
  3. acquire the prevalence of thyroid diseases in Hangzhou
  4. explore the association between iodized salt and thyroid disease

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

12438

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
    • Zhejiang
      • Hangzhou, Zhejiang, China, 310000
        • Hangzhou Center of Disease Control and Prevention

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

6 years to 86 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

This study was conducted in Hangzhou, Zhejiang Province, China, which locates at east of China. This city covers eight districts and five counties. There are 8.7 millions residents in Hangzhou city; 73.25% of them living in urban areas, 26.75% in rural areas. This study was designed to be representative of the civilian from Hangzhou and collected information on demographic characteristics, health status, iodine intake and thyroid disease.

Description

Inclusion Criteria:

  1. age ≥ 6 years old;
  2. living for above 5 years at present residence.

Exclusion Criteria:

  1. resident with coronary angiography (CAG) or endoscopic retrograde cholangiopancreatography (ERCP) in 6 months;
  2. resident taking amiodarone drug;
  3. resident with abnormal kidney function or serious illness

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
thyroid nodule

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
thyroid nodule
Time Frame: 8:00am (day 1)
An ultrasound examination of the thyroid was performed to detect thyroid nodules, using a Sonoline Versa Pro (Siemens, Munich, Germany) with a 7.5-MHz, 70-mm linear transducer (effective length, 62 mm).
8:00am (day 1)

Collaborators and Investigators

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

Sponsor

Weimin Xu

Investigators

  • Principal Investigator: Weimin Xu, Hangzhou Center for Disease Control and Prevention, Hangzhou, Zhejiang, 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

July 1, 2009

Primary Completion (Actual)

June 1, 2012

Study Completion (Actual)

June 1, 2012

Study Registration Dates

First Submitted

April 19, 2013

First Submitted That Met QC Criteria

April 23, 2013

First Posted (Estimate)

April 24, 2013

Study Record Updates

Last Update Posted (Estimate)

May 7, 2013

Last Update Submitted That Met QC Criteria

May 4, 2013

Last Verified

May 1, 2013

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 20090833B27

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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