- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01914640
The Sex Specific Waist Circumference Cut Off Points to Predict Overweight or Obesity
The Cross Sectional Study to Investigate the Waist Circumference Cut Off Points for the Prediction of Overweight and Obesity of the Turkish Adult Population
Study Overview
Status
Detailed Description
Waist circumference (WC) is an easy and reliable measure of visceral adipose tissue and a simple index of cardiovascular risk. The World Health Organization (WHO) reported sex specific WC cut off values for the Caucasian people, named as action levels 1 and 2, to define the overweight or obese people. These cut off values, originally established in a Dutch population, were later adopted by several medical organizations in order to define Metabolic Syndrome. However, these cut off levels may not necessarily represent the characteristics of the other populations. Therefore it is recommended that the sex specific WC cut off points should be established for different ethnic groups.
The investigators aimed to investigate whether the suggested sex specific WC cut off points for the Caucasian adults are appropriate for the Turkish adult population. The secondary aim of the study is to search for better WC cut off points to predict obesity, metabolic syndrome and increased cardiovascular risk in Turkish adult men and women.
Study Type
Enrollment (Actual)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Adult Male or nonpregnant Female
Exclusion Criteria:
Pregnant females, Subjects younger than 20 or older than 83
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Healthy adults living in Turkey
The group was enrolled from the 24 provinces of the 7 regions of Turkey.
At least 3 provinces were selected from each region by a random sampling method.
The populations of these 7 regions were obtained from the records of the 2000 census.
The study sample included males and non-pregnant females aged between 20 and 83 years.
The populations of city centers, districts, and villages were classified by using the stratified sampling method and then were selected from the data collected from the household identification forms by random sampling.
The geography of Turkey was classified into three groups according to altitude.
Sea level was accepted as zero.
0-300 m was taken as coastal, 300-900 m as moderate
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Waist circumference cut off levels
Time Frame: About a year to collect all the demographic data
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These cut off levels were determined by the receiver operating curve analyses.
The sum of the highest sensitivity and specificity values of the WC levels to determine the overweight (Body mass index (BMI) > 25kg/m2) and obese (BMI>30kg/m2) adults were taken as the cut off points.
The cut off points to determine the overweight, were also taken as the WC limits for the diagnosis of metabolic syndrome.
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About a year to collect all the demographic data
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Collaborators and Investigators
Sponsor
Investigators
- Study Director: Fahri Bayram, MD. Prof., Head of the Study Group of Hypertension, Lipid disorders and Obesity of Turkish Society of Endocrinology and Metabolism
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- TEMD/OBDLHT- 0001
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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