Table 7.
ROC curve analysis determined between MCI and age-matched HC, adjusted for age and sex.
| attempts | Time | 68.8% | 66.7% | 0.5438 | 0.679, p=0.018* | 9.8% | 97.6% | 18.7% | 95.1% | 28.2% | 91.8% | 34.1% | 89.5% | 54.5% | 78.7% |
| Ego average of all 8 attempts | Error | 75.8% | 77.8% | 0.4393 | 0.783, p<0.001* | 15.2% | 98.4% | 27.5% | 96.7% | 39.4% | 94.4% | 46.1% | 92.8% | 66.4% | 84.7% |
| Time | 68.8% | 70.4% | 0.5390 | 0.642, p=0.061 | 10.9% | 97.7% | 20.5% | 95.3% | 30.7% | 92.2% | 36.8% | 90% | 57.4% | 79.6% | |
| Allo 1st attempt | Error | 75.8% | 51.9% | 0.4920 | 0.622, p=0.105 | 7.7% | 97.6% | 14.9% | 95.1% | 23.1% | 91.8% | 28.3% | 89.6% | 47.7% | 78.7% |
| Time | 71.9% | 55.6% | 0.5228 | 0.641, p=0.063 | 7.9% | 7.4% | 15.2% | 94.7% | 23.6% | 91.2% | 28.8% | 88.8% | 48.4% | 77.3% | |
| Allo average of last 4 attempts | Error | 78.8% | 55.6% | 0.4522 | 0.694, p=0.010* | 8.5% | 98% | 16.5% | 95.9% | 25.3% | 93.2% | 30.7% | 91.3% | 50.7% | 81.9% |
| Time | 59.4% | 74.1% | 0.5654 | 0.639, p=0.068 | 10.8% | 97.2% | 20.3% | 94.3% | 30.4% | 90.5% | 36.4% | 88% | 57.1% | 75.9% | |
| Allo average of all 8 attempts | Error | 66.7% | 59.3% | 0.4916 | 0.673, p=0.022* | 7.9% | 97.1% | 15.4% | 94.1% | 23.8% | 90.3% | 29.1% | 87.7% | 48.7% | 75.4% |
| Time | 68.8% | 70.4% | 0.5524 | 0.635, p=0.075 | 10.9% | 97.7% | 20.5% | 95.3% | 30.7% | 92.2% | 36.8% | 90% | 57.4% | 79.6% | |
| Combined Allo-Ego 1st attempt | Error | 84.8% | 59.3% | 0.4454 | 0.767, p<0.001* | 9.9% | 98.7% | 18.8% | 97.2% | 28.4% | 95.3% | 34.2% | 94% | 54.7% | 87.1% |
| Time | 75% | 44.4% | 0.4908 | 0.620, p=0.114 | 6.6% | 97.1% | 13% | 94.1% | 20.4% | 90.3% | 25.2% | 87.7% | 43.9% | 75.4% | |
| Combined Allo-Ego average of last 4 attempts | Error | 60.6% | 81.5% | 0.5968 | 0.745, p=0.001* | 14.7% | 97.5% | 26.7% | 94.9% | 38.4% | 91.6% | 45% | 89.2% | 65.5% | 78.1% |
| Time | 59.4% | 70.4% | 0.5644 | 0.620, p=0.114 | 9.6% | 97.1% | 18.2% | 94% | 27.7% | 90.1% | 33.4% | 87.4% | 53.8% | 74.9% | |
| Combined Allo-Ego average of all 8 attempts | Error | 45.5% | 100% | 0.8049 | 0.774, p<0.001* | 100% | 97.2% | 100% | 94.3% | 100% | 90.6% | 100% | 88% | 100% | 76% |
| Time | 46.9% | 81.5% | 0.6105 | 0.617, p=0.124 | 11.8% | 96.7% | 22% | 93.2% | 32.6% | 89% | 38.8% | 86% | 59.5% | 72.6% | |
| Ego average of first 4 attempts | Error | 69.7% | 85.2% | 0.5262 | 0.776, p<0.001* | 19.9% | 98.2% | 34.4% | 96.2% | 47.3% | 93.7% | 54.1% | 91.8% | 73.2% | 82.9% |
| Allo average of first 4 attempts | Error | 81.8% | 44.4% | 0.4397 | 0.648, p=0.051 | 7.2% | 97.9% | 14.1% | 95.6% | 21.9% | 92.8% | 26.9% | 90.7% | 46% | 80.8% |
| Combined Allo-Ego average of first 4 attempts | Error | 75.8% | 70.4% | 0.4603 | 0.772, p<0.001* | 11.9% | 98.2% | 22.2% | 96.3% | 32.8% | 93.9% | 39% | 92.1% | 59.8% | 83.4% |
Allo, allocentric; AUC, area under the curve; Ego, egocentric; HC, healthy control; MCI, mild cognitive impairment; NPV, negative predictive value; PPV, positive predictive value; Prev, prevalence.