Characteristics for APOE ϵ4 noncarriers and carriers groups
| APOE ϵ4 noncarriers | APOE ϵ4 carriers | p value | |
|---|---|---|---|
| Participants, no. (%) | 85 (72) | 33 (28) | |
| Age at PIB, years (SD) | 76.72 (5.80) | 74.59 (4.63) | 0.06 |
| Women, no. (%) | 50 (59) | 20 (61) | 1.00 |
| Education | 16.73 (1.86) | 17.21 (2.37) | 0.24 |
| MMSE, mean (SD) | 28.72 (1.33) | 28.70 (1.26) | 0.94 |
| Measurement characteristics | |||
| Δtime (NTS-MRI), years (SD) | 0.29 (0.17) | 0.30 (0.18) | 0.83 |
| Δtime (NTS-PIB), years (SD) | 0.34 (0.37) | 0.38 (0.32) | 0.57 |
| Δtime (MRI-PIB), years (SD) | 0.13 (0.33) | 0.14 (0.35) | 0.83 |
| Cognitive activity | |||
| Lifetime | 3.53 (0.56) | 3.51 (0.51) | 0.85 |
| Early life | 3.36 (0.73) | 3.38 (0.63) | 0.89 |
| Middle life | 3.68 (0.57) | 3.55 (0.47) | 0.23 |
| Current life | 3.88 (0.56) | 3.85 (0.64) | 0.76 |
p Values were estimated from parametric or nonparametric statistical comparisons.
Δ, Difference; NTS, neuropsychological test session.