Table 4.
Discriminatory ability of each self-reported silhouette ranking in detecting obesity by sex (Seychelles, 2013, N = 1240)
| Men | Women | |||||||
|---|---|---|---|---|---|---|---|---|
| Cut off | Sensivity (%) | Specificity | PPV (%) | NPV (%) | Sensivity (%) | Specificity | PPV (%) | NPV (%) |
| (=1) | 100 | 0.0 | 21.0 | 100 | 100 | 0.0 | 41.1 | 100 |
| (=2) | 100 | 1.9 | 21.3 | 100 | 100 | 0.5 | 41.1 | 100 |
| (=3) | 100 | 18.4 | 24.6 | 100 | 100 | 6.9 | 42.7 | 100 |
| (=4) | 100 | 45.1 | 32.6 | 100 | 99.3 | 25.7 | 48.1 | 98.5 |
| (=5) | 92.0 | 79.7 | 54.6 | 97.4 | 96.5 | 56.1 | 60.4 | 95.9 |
| (=6) | 46.4 | 97.1 | 81.2 | 87.2 | 80.9 | 84.1 | 77.9 | 86.4 |
| (=7) | 18.8 | 99.8 | 95.4 | 82.2 | 43.4 | 98.3 | 94.8 | 71.4 |
| (=8) | 4.5 | 100 | 100 | 79.7 | 17.4 | 99.1 | 92.7 | 63.3 |
| (=9) | 1.8 | 100 | 100 | 79.3 | 7.3 | 100 | 100 | 60.8 |
Note: Sensitivity, Specificity, Positive Predictive Value (PPV), and Negative Predictive Value (NPV) of each silhouette ranking in detecting obesity (BMI of 30 or higher) in men and women