The product of waist and neck circumference outperforms traditional anthropometric indices in identifying metabolic syndrome in Chinese adults with type 2 diabetes: a cross-sectional study

Table 4 ROC curve of different anthropometric parameters for MetS in women

Anthropometric parameters	Area under curve	95% confidence interval	Optimal cut-off level	Sensitivity	Specificity	Youden's index
PWNC**	0.955	0.938–0.972	3130 cm²	0.868	0.937	0.805
WC	0.905	0.879–0.931	85.5 cm	0.882	0.785	0.667
NC	0.937	0.916–0.959	35.3 cm	0.871	0.889	0.760
WHR**	0.757	0.711–0.803	0.925	0.802	0.604	0.406
BMI*	0.852	0.819–0.886	24.5 kg/m²	0.694	0.761	0.555

ROC Receiver operating characteristic curve, MetS Metabolic syndrome, PWNC Product of waist circumference and neck circumference, WC Waist circumference, NC Neck circumference, WHR Waist-hip ratio, BMI Body mass index. The area under the curve compared with WC: * P < 0.05; ** P < 0.01 (DeLong test)

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