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Waist circumference cut-off points for identification of abdominal obesity among the tunisian adult population.
Diabetes Obes Metab. 2007 Nov; 9(6):859-68.DO

Abstract

AIMS

Waist circumference (WC) is a convenient measure of abdominal adipose tissue. It itself is a cardiovascular disease (CVD) and diabetes-risk factor and is strongly linked to other CVD risk factors. There are, however, ethnic differences in the relationship of WC to the other risk factors. The aim of this study was to determine the optimal cut-off points of WC and body mass index (BMI) at which cardiovascular risk factors can be identified with maximum sensitivity and specificity in a representative sample of the Tunisian adult population and to investigate any correlation between WC and BMI.

METHODS

We used a sample of the Tunisian National Nutrition Survey, a cross-sectional population-based survey, conducted in 1996 on a large nationally representative sample, which included 3435 adults (1244 men and 2191 women) of 20 years or older. WC, BMI, blood pressure and fasting blood measurements (plasma glucose, total cholesterol, triglycerides) were recorded. Receiver operating characteristic (ROC) curve analysis was used to identify optimal cut-off values of WC and BMI to identify with maximum sensitivity and specificity the detection of high blood pressure, hyperglycaemia, high blood cholesterol and hypertriglyceridaemia.

RESULTS

ROC curve analysis suggested WC cut-off points of 85 cm in men and 85 cm in women for the optimum detection of high blood pressure, diabetes and dyslipidaemia. The optimum BMI cut-off points for predicting cardiovascular risk factors were 24 kg/m(2) in men and 27 kg/m(2) in women. The cut-off points recommended for the Caucasian population differ from those appropriate for the Tunisian population. The data show a continuous increase in odds ratios of each cardiovascular risk factor, with increasing level of WC and BMI. WC exceeding 85 cm in men and 79 cm in women correctly identified subjects with a BMI of >/=25 kg/m(2), sensitivity of >90% and specificity of >83%.

CONCLUSIONS

Based on the ROC analysis, we suggest a WC of 85 cm for both men and women as appropriate cut-off points to identify central obesity for the purposes of CVD and diabetes-risk detection among Tunisians. WCs of 85 cm in men and 79 cm in women were the most sensitive and specific to identify most subjects with a BMI >/=25 kg/m(2).

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Authors+Show Affiliations

Bouguerra R
Institut National de Nutrition, Tunis, Tunisia.
Alberti H
No affiliation info available
Smida H
No affiliation info available
Salem LB
No affiliation info available
Rayana CB
No affiliation info available
El Atti J
No affiliation info available
Achour A
No affiliation info available
Gaigi S
No affiliation info available
Slama CB
No affiliation info available
Zouari B
No affiliation info available
Alberti KG
No affiliation info available

MeSH

AdultAnthropometryBody Mass IndexCardiovascular DiseasesFemaleHumansMaleMiddle AgedObesityOdds RatioPredictive Value of TestsROC CurveRisk FactorsSensitivity and SpecificitySex FactorsTunisiaWaist-Hip Ratio

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17924868

Citation

Bouguerra, R, et al. "Waist Circumference Cut-off Points for Identification of Abdominal Obesity Among the Tunisian Adult Population." Diabetes, Obesity & Metabolism, vol. 9, no. 6, 2007, pp. 859-68.
Bouguerra R, Alberti H, Smida H, et al. Waist circumference cut-off points for identification of abdominal obesity among the tunisian adult population. Diabetes Obes Metab. 2007;9(6):859-68.
Bouguerra, R., Alberti, H., Smida, H., Salem, L. B., Rayana, C. B., El Atti, J., Achour, A., Gaigi, S., Slama, C. B., Zouari, B., & Alberti, K. G. (2007). Waist circumference cut-off points for identification of abdominal obesity among the tunisian adult population. Diabetes, Obesity & Metabolism, 9(6), 859-68.
Bouguerra R, et al. Waist Circumference Cut-off Points for Identification of Abdominal Obesity Among the Tunisian Adult Population. Diabetes Obes Metab. 2007;9(6):859-68. PubMed PMID: 17924868.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Waist circumference cut-off points for identification of abdominal obesity among the tunisian adult population. AU - Bouguerra,R, AU - Alberti,H, AU - Smida,H, AU - Salem,L B, AU - Rayana,C B, AU - El Atti,J, AU - Achour,A, AU - Gaigi,S, AU - Slama,C B, AU - Zouari,B, AU - Alberti,K G M M, PY - 2007/10/11/pubmed PY - 2008/2/26/medline PY - 2007/10/11/entrez SP - 859 EP - 68 JF - Diabetes, obesity & metabolism JO - Diabetes Obes Metab VL - 9 IS - 6 N2 - AIMS: Waist circumference (WC) is a convenient measure of abdominal adipose tissue. It itself is a cardiovascular disease (CVD) and diabetes-risk factor and is strongly linked to other CVD risk factors. There are, however, ethnic differences in the relationship of WC to the other risk factors. The aim of this study was to determine the optimal cut-off points of WC and body mass index (BMI) at which cardiovascular risk factors can be identified with maximum sensitivity and specificity in a representative sample of the Tunisian adult population and to investigate any correlation between WC and BMI. METHODS: We used a sample of the Tunisian National Nutrition Survey, a cross-sectional population-based survey, conducted in 1996 on a large nationally representative sample, which included 3435 adults (1244 men and 2191 women) of 20 years or older. WC, BMI, blood pressure and fasting blood measurements (plasma glucose, total cholesterol, triglycerides) were recorded. Receiver operating characteristic (ROC) curve analysis was used to identify optimal cut-off values of WC and BMI to identify with maximum sensitivity and specificity the detection of high blood pressure, hyperglycaemia, high blood cholesterol and hypertriglyceridaemia. RESULTS: ROC curve analysis suggested WC cut-off points of 85 cm in men and 85 cm in women for the optimum detection of high blood pressure, diabetes and dyslipidaemia. The optimum BMI cut-off points for predicting cardiovascular risk factors were 24 kg/m(2) in men and 27 kg/m(2) in women. The cut-off points recommended for the Caucasian population differ from those appropriate for the Tunisian population. The data show a continuous increase in odds ratios of each cardiovascular risk factor, with increasing level of WC and BMI. WC exceeding 85 cm in men and 79 cm in women correctly identified subjects with a BMI of >/=25 kg/m(2), sensitivity of >90% and specificity of >83%. CONCLUSIONS: Based on the ROC analysis, we suggest a WC of 85 cm for both men and women as appropriate cut-off points to identify central obesity for the purposes of CVD and diabetes-risk detection among Tunisians. WCs of 85 cm in men and 79 cm in women were the most sensitive and specific to identify most subjects with a BMI >/=25 kg/m(2). SN - 1462-8902 UR - https://www.unboundmedicine.com/medline/citation/17924868/Waist_circumference_cut_off_points_for_identification_of_abdominal_obesity_among_the_tunisian_adult_population_ L2 - https://doi.org/10.1111/j.1463-1326.2006.00667.x DB - PRIME DP - Unbound Medicine ER -