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Received operating characteristic (ROC) curves for the diagnostic performance of waist circumference, visceral fat, and neck circumference (NC) measurements regarding metabolic syndrome and obstructive sleep apnea syndromes (OSAS) in 92 short-sleeping obese women. Thin lines show 95% confidence intervals, arrows point at the optimal cutoff as defined by the Youden index for diagnostic sensitivity and specificity, and area under the curve (AUC).
