Table 2.
Clinical scales and cognitive tests at the baseline assessment of the study participants
| Baseline clinical scores and cognitive tests | Aβ+ | Aβ- | P value |
|---|---|---|---|
| CDR-SB | 0 | 0.085 | .06 |
| NPI-Q | 0.11 | 0.14 | .72 |
| FAQ | 0.21 | 0.08 | .05 |
| GDS | 0.63 | 1.45 | .02 |
| MMSE | 29.3 | 29.2 | .86 |
| ADAS-cog 13 | 8.83 | 7.4 | .18 |
| Logical memory, immediate | 14.4 | 13.7 | .39 |
| Logical memory, delayed | 12.6 | 12.3 | .78 |
| Digit span forward | 9.17 | 9 | .5 |
| Digit span backward | 6.11 | 6.73 | .18 |
| Category fluency, animal | 20.1 | 19.5 | .68 |
| Category fluency, vegetable | 15.9 | 16.3 | .57 |
| Trail making test -A | 40.5 | 36.9 | .39 |
| Trail making test -B | 94.6 | 97.6 | .82 |
| Digit symbol substitution test | 63.8 | 66.7 | .28 |
| Boston naming test | 28.8 | 29 | .71 |
| Clock drawing test | 5 | 4.7 | .04 |
| Clock copying test | 4.95 | 4.97 | .69 |
Abbreviations: Aβ, amyloid β; Aβ+, participants with Aβ accumulation; Aβ−, participants without Aβ accumulation; CDR-SB, clinical dementia rating sum of boxes; NPI-Q, Neuropsychiatric Inventory Questionnaire; FAQ, Functional Assessment Questionnaire; GDS, Geriatric Depression Scale; MMSE, Mini-Mental State Examination; ADAS-cog 13, Alzheimer's Disease Assessment Scale–cognitive subscale 13.
NOTE. All P values were determined by use of the Mann-Whitney U test.