Table 3.
Cut-off points and other parameters of WC, PBF and BMI in diagnosis of PCOS
| Age (y/o) | Obesity parameter | Cut-off point | Sensitivity (%) | Specificity (%) | Youden index | NPV (%) | PPV (%) |
|---|---|---|---|---|---|---|---|
| <26 | WC (cm) | 93.5 | 56.5 | 100 | 0.565 | 69.7 | 100 |
| PBF (%) | 28.3 | 91.3 | 64.2 | 0.555 | 88.1 | 71.8 | |
| BMI (kg/m2) | 26.6 | 56.5 | 100 | 0.565 | 69.7 | 100 | |
| 26–31 | WC (cm) | 80.5 | 69.1 | 84.5 | 0.536 | 73.2 | 81.7 |
| PBF (%) | 29.9 | 85.5 | 60.9 | 0.464 | 80.8 | 68.6 | |
| BMI (kg/m2) | 26.5 | 45.5 | 98.9 | 0.444 | 64.5 | 97.6 | |
| >31 | WC (cm) | 81.0 | 81.3 | 93.2 | 0.745 | 83.3 | 92.3 |
| PBF (%) | 33.0 | 71.9 | 83.6 | 0.555 | 74.8 | 81.4 | |
| BMI (kg/m2) | 26.6 | 68.8 | 94.5 | 0.633 | 75.2 | 92.6 | |
| Total | WC (cm) | 80.5 | 73.6 | 85.0 | 0.586 | 76.3 | 83.1 |
| PBF (%) | 29.0 | 88.2 | 57.7 | 0.459 | 83.0 | 67.6 | |
| BMI (kg/m2) | 26.6 | 54.5 | 98.0 | 0.525 | 68.3 | 96.5 |