Metabolic Syndrome and Vitamin D Level in Old People

January 27, 2026 updated by: Chih-Hsing Wu, National Cheng-Kung University Hospital

Inverse Relationship Between Metabolic Syndrome and Vitamin D Level in Old People Without Vitamin D Deficiency

In 2012, a cross-sectional survey sampling 1,966 community-dwelling old people was conducted. Structurized questionnaires were interviewed face-to-face by well-trained staffs. An overnight fasting blood were obtained for biochemistry parameters.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

549

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

  • Taiwan
      • Tainan, Taiwan
        • Department of Family Medicine, National Cheng Kung Univ Hosp

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

65 years and older (Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Tianliao District, located in Kaohsiung City in southern Taiwan, is a tropical, agriculture-based community. It is located at around 22N50' latitude, like Hawaii (18° 55' N to 28° 27' N), and about 7° farther south than Florida (24° 27' N to 31° 00' N). The annual average temperature is 25.1°C (range: 19.3-29.2°C), and its annual average sunshine duration is 212.2 hours (longest: 221.4 hours in July; shortest: 161.8 hours in December). In the 2012 census report, the total population of Tianliao District was 7800, and 1966 (25.2%) participants were ≥ 65 years old.

Description

Inclusion Criteria:

  • more than 65-year-old

Exclusion Criteria:

  • excluding empty houses, death, non-ambulatory subjects (subjects with significant disabilities, such as handicapped cerebral vascular accident, cancerous cachexia, unstable chronic diseases or psychiatric disorders, severe arthritis or inflammatory disease), uncomfortable anorexia by any medications, and non-reachable subjects

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
Osteoporotic fracture rate
Time Frame: 5 year
Vertebra, non-vertebra, major fracture
5 year

Collaborators and Investigators

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

Sponsor

National Cheng-Kung University 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)

July 30, 2012

Primary Completion (Actual)

August 17, 2012

Study Completion (Actual)

August 17, 2012

Study Registration Dates

First Submitted

September 10, 2017

First Submitted That Met QC Criteria

November 13, 2017

First Posted (Actual)

November 17, 2017

Study Record Updates

Last Update Posted (Actual)

January 29, 2026

Last Update Submitted That Met QC Criteria

January 27, 2026

Last Verified

November 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Tianliao old people study 2012

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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