Table 4.
Demographic characteristics and performance in psychometric measures as a function of two ε4 status for healthy older adults
| APOe4− (N = 69) | APOe4+ (N = 27) | p | |||||
|---|---|---|---|---|---|---|---|
| Mean | N | SD | Mean | N | SD | ||
| Age | 75.19 | 69 | 8.18 | 73.30 | 27 | 9.10 | 0.33 |
| Years of Education | 15.01 | 68 | 2.83 | 15.37 | 27 | 3.12 | 0.59 |
| Mini-Mental State Exam | 29.12 | 66 | 1.13 | 29.19 | 27 | 1.04 | 0.80 |
| WMS Logical Memory | 11.86 | 65 | 3.60 | 11.06 | 26 | 4.08 | 0.36 |
| WMS Digit Forward | 6.60 | 65 | 1.27 | 6.73 | 26 | 1.61 | 0.68 |
| WMS Digit Backward | 5.03 | 65 | 1.44 | 4.62 | 26 | 1.39 | 0.21 |
| WMS Associate Memory | 14.70 | 66 | 3.59 | 15.19 | 27 | 3.59 | 0.56 |
| Selective Reminding Free Recall | 31.56 | 66 | 5.43 | 28.74 | 27 | 6.81 | 0.04 |
| WAIS-R Information | 22.14 | 65 | 3.78 | 21.67 | 26 | 3.99 | 0.46 |
| WAIS-R Similarities | 25.55 | 66 | 3.84 | 25.44 | 27 | 4.92 | 0.92 |
| Crossing Off | 168.82 | 66 | 42.85 | 177.85 | 27 | 39.69 | 0.35 |
| Trail Making A | 35.91 | 66 | 14.01 | 29.73 | 27 | 10.54 | 0.59 |
| Trail Making B | 90.20 | 65 | 36.60 | 83.73 | 26 | 38.65 | 0.05 |
| Reading Span | 7.29 | 69 | 1.68 | 7.12 | 26 | 1.42 | 0.64 |
| Rotation Span | 8.26 | 66 | 3.47 | 9.04 | 24 | 3.04 | 0.33 |
| Computational Span | 8.93 | 69 | 3.59 | 7.56 | 27 | 3.29 | 0.09 |
| Animal Naming | 19.91 | 65 | 5.68 | 19.38 | 26 | 7.03 | 0.71 |
| Word Fluency S-P | 33.98 | 66 | 10.96 | 32.22 | 27 | 11.29 | 0.49 |
Note. The p column indicates the p-value associated with the independent t statistics for the comparison between APOe4+ and APOe4− groups.