Table 1.
Sample characteristics.
| Total sample (N = 515) |
NC (N = 250) |
HT (N = 197) |
HO (N = 68) |
Inferential statistics | |||||
|---|---|---|---|---|---|---|---|---|---|
| M | SD | M | SD | M | SD | M | SD | ||
| Agea | 58.00 | 7.41 | 58.40 | 7.55 | 58.57 | 7.35 | 54.94 | 6.18 | F = 6.88; p < .01 |
| Educationa | 13.64 | 3.57 | 13.62 | 3.61 | 13.75 | 3.53 | 13.38 | 3.46 | F = 0.27; p = .76 |
| MMSEb | 29.04 | 1.08 | 29.00 | 1.12 | 29.02 | 1.10 | 29.26 | 0.77 | F = 1.54; p = .22 |
| TFRb | 16.47 | 5.16 | 16.23 | 5.15 | 16.37 | 5.12 | 17.73 | 5.12 | F = 2.24; p = .11 |
| TPRb | 24.11 | 4.50 | 23.72 | 4.84 | 24.24 | 4.23 | 25.19 | 3.68 | F = 2.84; p = .06 |
| WMHc | 3.18 [1.09, 3.65] | 3.22 [1.13, 3.41] | 3.03 [1.08, 3.70] | 3.47 [1.13, 3.82] | H = 0.60; p = .65 | ||||
| Fazekas scales | 0: 247 1: 221 2: 39 3:2 | 0: 113 1: 115 2: 17 3: 2 | 0: 101 1: 80 2: 14 | 0: 33 1: 26 2: 8 | χ2 = 3.82; p = .43 | ||||
| Male/female | 201/314 | 88/162 | 88/109 | 25/43 | χ2 = 4.32; p = .12 | ||||
NC = APOE-ε4 Non-carriers; HT = APOE-ε4 Heterozygous; HO = APOE-ε4 Homozygous; MMSE = Mini-Mental State Examination score; TPR = Total Paired Recall; TFR = Total Free Recall;; WMH = White Matter Hyperintensities; M = mean; SD = standard deviation.
a
Indicated in years.
b
Cognition data was not available for 15 subjects.
c
Indicated in mL. Mean value is presented along with first and third quartiles. Data was not available for 6 subjects.