Table 5.
Performance of body assessment at each cutoff point
| Cutoff-point | Sensitivity (%) | Specificity (%) | LR + | LR- | Post-test probability (positive, negative) |
Youden index |
|---|---|---|---|---|---|---|
| Calf circumference | ||||||
| Male < | ||||||
| 36 | 78.8 | 83.8 | 4.87 | 0.25 | 60.0, 7.0 | 0.626 |
| 36.5 | 84.9 | 78.7 | 3.98 | 0.19 | 55.0, 6.0 | 0.635 |
| 37 | 90.9 | 77.2 | 3.99 | 0.12 | 55.0, 3.5 | 0.681a |
| 37.5 | 93.9 | 69.1 | 3.04 | 0.09 | 49.0, 3.0 | 0.631 |
| 38 | 100.0 | 62.5 | 2.67 | 0.00 | 45.0, 0.0 | 0.625 |
| Female < | ||||||
| 35 | 73.3 | 80.0 | 3.67 | 0.33 | 53.0, 9.0 | 0.533 |
| 35.5 | 80.0 | 73.0 | 2.97 | 0.27 | 48.0, 8.0 | 0.530 |
| 36 | 91.1 | 67.8 | 2.83 | 0.13 | 47.0, 3.9 | 0.589a |
| 36.5 | 95.6 | 61.7 | 2.50 | 0.07 | 44.0, 2.0 | 0.573 |
| 37 | 97.8 | 55.7 | 2.20 | 0.04 | 41.0, 1.0 | 0.534 |
| Neck circumference | ||||||
| Male < | ||||||
| 38 | 48.8 | 93.4 | 7.32 | 0.55 | 69.0, 15.0 | 0.419 |
| 38.5 | 57.6 | 88.2 | 4.90 | 0.48 | 60.0, 13.0 | 0.458 |
| 39 | 60.6 | 85.3 | 4.12 | 0.46 | 56.0, 13.0 | 0.459 |
| 39.5 | 69.7 | 78.9 | 3.27 | 0.39 | 50.0, 11.0 | 0.484a |
| 40 | 72.7 | 74.3 | 2.83 | 0.37 | 47.0, 10.0 | 0.470 |
| Female < | ||||||
| 35 | 55.6 | 86.9 | 4.26 | 0.51 | 57.0, 14.0 | 0.425 |
| 35.5 | 64.4 | 74.7 | 2.56 | 0.48 | 44.0, 13.0 | 0.392 |
| 36 | 71.1 | 71.3 | 2.48 | 0.41 | 43.0, 11.0 | 0.424 |
| 36.5 | 82.2 | 62.6 | 2.20 | 0.28 | 41.0, 8.0 | 0.448a |
| 37 | 84.4 | 59.1 | 2.07 | 0.26 | 39.0, 8.0 | 0.436 |
|
Calf circumference: M < 37; F < 36 Neck circumference: M < 39.5; F < 36.5 |
73.1 | 86.9 | 5.56 | 0.31 | 63.0, 9.0 | 0.600 |
aThe maximum of the Youden index