Table 4.
Baseline mean (SD) performance of each Aβ group on the neuropsychological tests and results of analysis of covariance with age and APOE ε4 as covariates
| Neuropsychological measure | Aβ− |
Aβ+ |
F | P |
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | |||
| Digit Symbol Coding | 64.28 (12.53) | 61.91 (15.60) | 1.52 | .22 |
| Stroop Words | 17.53 (4.08) | 17.60 (5.07) | 0.01 | .91 |
| Detection | 2.52 (0.12) | 2.51 (0.14) | 0.17 | .68 |
| Identification | 2.69 (0.06) | 2.72 (0.08) | 4.89 | .03 |
| Digit Span | 18.64 (4.20) | 17.91 (5.21) | 1.31 | .25 |
| FAS | 45.32 (12.19) | 41.77 (15.17) | 3.62 | .06 |
| Animals Names | 43.47 (8.70) | 41.09 (10.81) | 3.18 | .08 |
| Fruit Furniture Total | 13.91 (2.79) | 14.32 (3.47) | 0.89 | .35 |
| One Back | 2.92 (0.09) | 2.94 (0.11) | 2.18 | .14 |
| Logical Memory 1 | 13.59 (3.90) | 13.78 (4.85) | 0.09 | .76 |
| CVLT-II 1–5 | 53.37 (10.24) | 54.25 (12.74) | 0.32 | .57 |
| RCFT Short Delay | 18.10 (5.77) | 17.28 (7.18) | 0.85 | .36 |
| One Card Learning | 1.04 (0.12) | 1.03 (0.14) | 0.55 | .46 |
| Logical Memory 2 | 12.55 (4.00) | 12.36 (4.97) | 0.10 | .75 |
| CVLT-II Long Delay | 12.42 (3.00) | 12.40 (3.74) | 0.00 | .96 |
| RCFT Long Delay | 18.47 (5.91) | 17.12 (7.36) | 2.22 | .14 |
Abbreviations: Animals Names, category fluency for animals and boys names; CVLT-II, California Verbal Learning Test-Second edition; FAS, letter fluency; Fruit Furniture Total, total Correct Responses for switching category fluency for fruit and furniture; RCFT, Rey Complex Figure Test; SD, standard deviation.
NOTE. Bold data indicates statistical significance (P <.05).