Diagnostic criteria for the 2, 4, 6, 8, 10 and 11-item solutions for the three-class categorisation
Items, n | VUS | Sensitivity (chronic status) | Sensitivity (acute status) | Specificity | Youden | Effect size | Cut-off ≤, ≥ |
2 | 0.41 | 0.80 | 0.47 | 0.23 | 0.25 | 1.02 | 0, 2 |
4 | 0.45 | 0.36 | 0.38 | 0.83 | 0.29 | 1.30 | 1, 3 |
6 | 0.47 | 0.42 | 0.53 | 0.57 | 0.27 | 1.50 | 1, 4 |
8 | 0.52 | 0.74 | 0.44 | 0.63 | 0.31 | 1.56 | 2, 4 |
10 | 0.52 | 0.48 | 0.50 | 0.82 | 0.40 | 1.56 | 3, 6 |
11 | 0.52 | 0.52 | 0.47 | 0.80 | 0.40 | 1.56 | 3, 6 |
VUS, volume under the surface.