critério de obesidade central em população brasileira: impacto sobre a síndrome metabólica criteria for central obesity in a brazilian population: impact on metabolic syndrome

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ID: 148882
2006
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Abstract
OBJETIVO: Identificar e propor os melhores pontos de corte da circunferência da cintura (CCp) para diagnosticar obesidade central numa população brasileira; compará-los àqueles recomendados pelo ATPIII (CC-ATPIII) e estimar diferenças nas prevalências da síndrome metabólica (SM) usando os dois critérios. MÉTODOS: Estudo transversal, realizado em subgrupo populacional de 1.439 adultos, Salvador, Brasil. Foram construídas curvas ROC da circunferência da cintura (CC) para identificar diabete melito (DM) e obesidade. Valores >60% da sensibilidade e da especificidade da curva ROC e mais próximos entre si foram usados para definir o CCp. A prevalência da SM foi estimada pelos CCp e pelos CC-ATPIII. RESULTADOS: As 829 mulheres compuseram 57,7% da amostra. Os CCp selecionados foram 84 cm para mulheres e 88 cm para homens. Esses pontos detectaram DM com sensibilidade de 68,7% e 70%, respectivamente, e especificidade de 66,2% e 68,3%. Para obesidade, a sensibilidade e a especificidade foram 79,8% e 77,6% nas mulheres, e 64,3% e 71,6% nos homens. Pelos CC-ATPIII, 88 cm (mulheres) e 102 para (homens), as sensibilidades foram de 53,3% e 26,5%, para diagnosticar DM. Para obesidade, a sensibilidade foi 66,5% (mulheres) e 28,6% (homens). A prevalência da SM, pelos CCp foi 23,7%, IC 95% (21,6 - 25,9) e pelos CC-ATPIII de 19,0%, IC 95% (17,1- 20,9), 1,2 vezes maior pelo CCP. CONCLUSÃO: As CC-ATPIII foram inapropriados e subestimam a prevalência da SM nessa população, particularmente entre os homens. Sugerimos que os pontos de corte da CC de >84 cm nas mulheres e > 88 cm nos homens sejam testados em outras populações brasileiras.
OBJECTIVE: To identify and propose the optimal waist circumference cut-off points (WCp) for the diagnosis of central obesity (CO) in a Brazilian population, so as to compare these cut-off points with those recommended by the ATPIII (WC-ATPIII), and to estimate the difference in prevalence rates of metabolic syndrome (MS) using the two criteria. METHODS: Cross-sectional study conducted in a population subgroup of 1439 adults in the city of Salvador, Brazil. ROC curves of waist circumference (WC) were plotted to identify diabetes mellitus (DM) and obesity. ROC curve sensitivity and specificity values >60% and the closest to each other were used to define WCp. The prevalence of MS was estimated using WCp and WC-ATPIII. RESULTS: Eight hundred and twenty nine women comprised 57.7% of the sample. The WCp selected were 84cm for women and 88cm for men. These cut-off points detected DM with a 68.7% and 70% sensitivity, and a 66.2% and 68.3% specificity, respectively. For obesity, sensitivity and specificity were 79.8% and 77.6% in women and 64.3% and 71.6% in men, respectively. Using WC-ATPIII, 88cm (for women) and 102cm (for men), the sensitivity was 53.3% and 26.5%, respectively, to diagnose DM. For obesity, sensitivity was 66.5% (for women) and 28.6% (for men). The prevalence of MS using WCp was 23.7%, 95%CI (21.6 - 25.9), whereas using WC-ATPIII it was 19.0%, 95%CI (17.1- 20.9), 1.2 times higher using WCp. CONCLUSION: WC-ATPIII were inappropriate and underestimated the prevalence of MS in the population studied, particularly among men. We suggest that the WC cut-off points > 84cm for women and > 88cm for men should be tested in other Brazilian populations.
Reference Key
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Authors ;Paulo José Bastos Barbosa;Ínes Lessa;Naomar de Almeida Filho;Lucélia Batista N. Cunha Magalhães;Jenny Araújo
Journal revista cubana de ciencias informáticas
Year 2006
DOI
10.1590/S0066-782X2006001700003
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2006001700003
Keywords
metabolic syndrome central obesity waist circumference brazilian populationdiseases of the circulatory (cardiovascular) system

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