Clinical trial NCT01914640: The Sex Specific Waist Circumference Cut Off Points to Predict Overweight or Obesity
Official title: 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 type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: The Focus of Study is to Determine the Waist Circumference Values to Predict Overweight or Obesity
Keywords: Waist circumference, Metabolic Syndrome, Cardiovascular risk
Lead sponsor: TC Erciyes University
Sponsor class: OTHER
First posted: 2013-08-02
Enrollment: 4310
Sex: ALL
Minimum age (years): 20
Maximum age (years): 85
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: ECOLOGIC_OR_COMMUNITY
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: This cross-sectional study was conducted in 24 provinces from the 7 regions of Turkey. Turkish adult males and non-pregnant females were randomly enrolled from both the provincial district centers and villages, considering the demographics, economic, social, and geographical statuses.

Brief summary: The waist circumference (WC) cut off levels of the Caucasian people may not represent the characteristics of different ethnic groups. The investigators aimed to determine sex specific WC cut off points to predict obesity, metabolic syndrome and increased cardiovascular risk in Turkish adults.

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.

Eligibility criteria: Inclusion Criteria:

* Adult Male or nonpregnant Female

Exclusion Criteria:

Pregnant females, Subjects younger than 20 or older than 83

Primary outcomes:
measure: Waist circumference cut off levels
timeFrame: About a year to collect all the demographic data
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
affiliation: Head of the Study Group of Hypertension, Lipid disorders and Obesity of Turkish Society of Endocrinology and Metabolism
name: Fahri Bayram, MD. Prof.
role: STUDY_DIRECTOR
References:
citation: Gundogan K, Bayram F, Gedik V, Kaya A, Karaman A, Demir O, Sabuncu T, Kocer D, Coskun R. Metabolic syndrome prevalence according to ATP III and IDF criteria and related factors in Turkish adults. Arch Med Sci. 2013 Apr 20;9(2):243-53. doi: 10.5114/aoms.2013.34560. Epub 2013 Apr 12.