Table 6.
Sensitivity analyses of AD8 and MMSE scores to detect dementia
| Score | n | % Demented | Logical memory | PIB binding | CSF Aβ42 |
|---|---|---|---|---|---|
| AD8 | |||||
| 0 | 92 | 3.1 | 13.0 | 0.13 | 576.4 |
| 1 | 39 | 4.9 | 12.2 | 0.09 | 619.9 |
| 2 | 24 | 20.8 | 10.9 | 0.25 | 551.1 |
| 3 | 11 | 66.7 | 12.7 | 0.27 | 486.0 |
| 4 | 8 | 88.9 | 9.0 | 0.62 | 400.9 |
| 5 | 15 | 100 | 9.7 | 0.49 | 498.3 |
| 6 | 20 | 95.2 | 7.5 | 0.49 | 330.4 |
| 7 | 20 | 100 | 5.5 | 0.78 | 436.2 |
| 8 | 10 | 100 | 4.9 | 0.75 | 304.4 |
| MMSE | |||||
| 30 | 74 | 16.2 | 13.3 | 0.19 | 526.5 |
| 29 | 56 | 22.0 | 12.2 | 0.12 | 564.1 |
| 28 | 33 | 27.8 | 12.1 | 0.19 | 587.5 |
| 27 | 26 | 40.7 | 11.5 | 0.25 | 547.3 |
| 26 | 22 | 58.3 | 9.2 | 0.44 | 473.6 |
| 25 | 11 | 83.3 | 6.5 | 0.39 | 475.6 |
| 24 | 10 | 80.0 | 6.0 | 0.36 | 368.4 |
| 23 | 6 | 87.5 | 4.5 | 0.88 | 336.5 |
| 22 | 2 | 100 | 0.0 | n/a | 321.5 |
| 21 | 1 | 100 | 2.0 | 1.1 | n/a |
| 20 | 5 | 100 | 1.8 | 0.77 | 343.9 |
n/a = not available; values for logical memory, PiB binding and CSF Aβ42 represent means published cut-offs: ≥2 for AD8; ≤23 for MMSE.