Table 2 ROC analyses of DRS total and subscale scores for discriminate MCI from NC, MCI from mild AD and mild AD from moderate AD
NC vs. MCI | MCI vs. Mild AD | Mild AD vs. Moderate AD | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AUC | cut-off score | Sensitivity (%) | Specificity (%) | AUC | cut-off score | Sensitivity (%) | Specificity (%) | AUC | cut-off score | Sensitivity (%) | Specificity (%) | ||
DRS total score | 0.708 | 131 | 65.3 | 67.6 | 0.924 | 120 | 84.5 | 85.0 | 0.846 | 103 | 79.7 | 78.4 | |
Attention | 0.581 | 36 | 48.5 | 65.4 | 0.681 | 36 | 75.9 | 51.5 | 0.740 | 34 | 59.4 | 76.7 | |
Initiation/perseveration | 0.545 | 30 | 38.9 | 72.1 | 0.845 | 29 | 87.1 | 67.7 | 0.756 | 16 | 50.0 | 87.9 | |
Construction | 0.565 | 5 | 20.4 | 92.6 | 0.605 | 5 | 39.7 | 79.6 | 0.720 | 4 | 56.2 | 79.3 | |
Conceptualization | 0.639 | 36 | 80.8 | 44.1 | 0.696 | 32 | 53.4 | 83.8 | 0.670 | 32 | 78.1 | 46.6 | |
Memory | 0.7434 | 22 | 68.3 | 72.8 | 0.885 | 19 | 87.1 | 77.2 | 0.823 | 13 | 84.4 | 72.4 | |