Table 1.
Participant Demographics | APOE ε4 – (n=223) | APOE ε4 + (n=127) | p-value |
---|---|---|---|
| |||
Age, years | 70.2 (7.9) | 68.9 (8.3) | t = −1.43, p=0.15 |
Male, n (%) | 103 (46.2) | 52 (41.0) | χ2=0.70, p=0.40 |
Education, years | 16.3 (2.4) | 16.3 (2.3) | t = −0.07, p=0.95 |
CDR > 0, n (%) | 18 (8.1) | 27 (21.2) | χ2=11.42, p=0.0007 |
CDR = 0.5 | 14 (6.3) | 22 (17.3) | |
CDR > 0.5 | 4 (1.8) | 5 (4.0) | |
CDR Sum of Boxes | 0.25 (1.04) | 0.65 (1.52) | t = 2.96, p=0.003 |
MMSE | 29.0 (1.7) | 28.5 (2.5) | t = − 2.30, p=0.02 |
White, n (%) | 200 (89.7) | 110 (86.6) | χ2 =0.48, p=0.49 |
Tau PET +, n (%) | 85 (38.1) | 64 (50.4) | χ2 =6.34, p=0.01 |
Aβ PET +, n (%) | 45 (20.2) | 61 (48.0) | χ2 =26.56, p<0.0001 |
Aβ Summary SUVR | 1.12 (0.50) | 1.49 (0.73) | t = 5.56, p<0.0001 |
Tau Summary SUVR | 1.24 (0.31) | 1.38 (0.41) | t = 3.47, p=0.0006 |
Mean (standard deviation) unless otherwise noted.
APOE = apolipoprotein E; CDR = Clinical Dementia Rating; Aβ = amyloid-beta.