Table 4.
Indexes corresponding to different cutoff scores
| CN vs. VCI (VCI-ND + VD) |
No dementia (CN + VCI-ND) vs. VD |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cutoff | Sen | Spe | PPV | NPV | YI | Cutoff | Sen | Spe | PPV | NPV | YI |
| 20.50 | 0.623 | 1.000 | 1.000 | 0.627 | 0.623 | 13.50 | 0.646 | 1.000 | 1.000 | 0.877 | 0.646 |
| 21.50 | 0.681 | 1.000 | 1.000 | 0.665 | 0.681 | 14.50 | 0.792 | 1.000 | 1.000 | 0.924 | 0.792 |
| 22.50 | 0.700 | 1.000 | 1.000 | 0.679 | 0.700 | 15.50 | 0.875 | 0.992 | 0.977 | 0.952 | 0.867 |
| 23.50 | 0.749 | 0.992 | 0.994 | 0.714 | 0.741 | 16.50 | 0.927 | 0.963 | 0.908 | 0.971 | 0.890 |
| 24.50 | 0.807 | 0.893 | 0.923 | 0.745 | 0.700 | 17.50 | 0.927 | 0.938 | 0.856 | 0.970 | 0.865 |
| 25.50 | 0.884 | 0.817 | 0.884 | 0.817 | 0.701 | 18.50 | 0.948 | 0.897 | 0.784 | 0.977 | 0.845 |
| 26.50 | 0.961 | 0.756 | 0.861 | 0.925 | 0.717 | 19.50 | 0.969 | 0.888 | 0.732 | 0.986 | 0.857 |
| 27.50 | 0.981 | 0.481 | 0.749 | 0.940 | 0.462 | 20.50 | 0.990 | 0.860 | 0.736 | 0.995 | 0.850 |
| 28.50 | 1.000 | 0.252 | 0.679 | 1.000 | 0.252 | 21.50 | 1.000 | 0.814 | 0.681 | 1.000 | 0.814 |
| 29.50 | 1.000 | 0.053 | 0.625 | 1.000 | 0.053 | 22.50 | 1.000 | 0.798 | 0.662 | 1.000 | 0.798 |
Numbers in bold represent the potential optimal cutoff point. Sen = Sensitivity; Spe = specificity; PPV = positive predictive value; NPV = negative predictive value; YI = Youden index.