Figure 1.

Receiver operating characteristic (ROC) curves of neck circumference for identifying metabolic syndrome in Males and Females. The areas under the ROC curves (AUCs) were calculated to evaluate the predictive values of NC for MetS. The AUCs of NC were 0.701 (95% confidence interval [CI], 0.643–0.760) for males and 0.707 (95% CI, 0.641–0.773) for females. Youden index was calculated and NC ≥ 37.3 cm (sensitivity 0.662, specificity 0.649) for males and NC ≥ 35.8 cm (sensitivity 0.59, specificity 0.67) for females was considered as the best cutoff values in identifying MetS.