Table 3.
Area under the ROC curve, optimal cut-off points, and validity parameters of different obesity indices in predicting MetS (N = 1,552).
| AUC (95% CI) | Cut-off value | Sensitivity | Specificity | Youden index | |
|---|---|---|---|---|---|
| Men | |||||
| Body mass index (BMI) | 0.56 (0.51–0.61) | 28 kg/m2 | 58.0% | 52.9% | 0.109 |
| 30 kg/m2 | 38.5% | 66.7% | 0.052 | ||
| Waist circumference (WC) | 0.78 (0.74–0.82) | 99.5 cm | 81.6% | 63.9% | 0.455 |
| 102 cm | 75.9% | 67.3% | 0.432 | ||
| Waist height ratio (WHtR) | 0.74 (0.71–0.79) | 0.58 | 75.1% | 64.8% | 0.399 |
| 0.50 | 96.6% | 24.5% | 0.211 | ||
| Waist hip ratio (WHR) | 0.75 (0.71–0.79) | 0.90 | 70.1% | 69.9% | 0.400 |
| Women | |||||
| Body mass index (BMI) | 0.70 (0.66–0.74) | 28.4 kg/m2 | 73.7% | 64.8% | 0.385 |
| 30 kg/m2 | 66.4% | 67.1% | 0.335 | ||
| Waist circumference (WC) | 0.81 (0.78–0.85) | 91.0 cm | 86.5% | 64.7% | 0.512 |
| 88 cm | 94.4% | 53.2% | 0.476 | ||
| Waist height ratio (WHtR) | 0.79 (0.76–0.83) | 0.63 | 77.6% | 71.5% | 0.491 |
| 0.50 | 96.1% | 20.1% | 0.162 | ||
| Waist hip ratio (WHR) | 0.75 (0.72–0.79) | 0.88 | 75.4% | 71.5% | 0.469 |
AUC: area under the curve, ROC: receiver operating characteristics, CI: confidence interval.