Table 3.
Area under the curve (AUC), cut-off value, sensitivity, and specificity of NC in detecting abdominal obesity, obesity, and adiposity according to ROC curves.
| Variables | Cut-Off Points (cm) | Sensitivity (%) |
Specificity (%) |
Classification (%) |
AUC |
|---|---|---|---|---|---|
| Abdominal obesity according by WC (men > 102 cm and women > 88 cm) |
≥40.6 | 85.0 | 78.1 | 81.0 | 0.84 |
| ≥34.2 | 78.7 | 76.9 | 78.3 | 0.86 | |
| Obesity by BMI > 30 kg/m2 | ≥40.5 | 76.7 | 73.0 | 74.7 | 0.76 |
| ≥35.5 | 76.9 | 73.3 | 74.9 | 0.84 | |
| Adiposity measured by DXA (60p for fat mass) (men ≥ 25 kg and women ≥ 30 kg) | ≥41.4 | 83.3 | 74.0 | 75.7 | 0.82 |
| ≥36.9 | 86.36 | 71.37 | 72.62 | 0.85 |
Notes: ROC: receiver operating characteristics; BMI: body mass index; 60p: DXA 60th percentile for fat mass.