Table 1 Demographics and cognitive and cerebral Aβ measures
| Â | Total sample N = 74 | Female N = 51 | Male N = 23 |
|---|---|---|---|
Age | 66.5 ± 5.7 | 66.0 ± 5.9 | 67.6 ± 5.1 |
Education years | 12.5 ± 4.9 | 12.5 ± 5.2 | 12.4 ± 4.1 |
ApoE4 (yes/no) | 16/58 | 11/40 | 6/17 |
CDR | 0 | 0 | 0 |
MMSE | 29.0 ± 1.2 | 28.9 ± 1.2 | 29.3 ± 1.1 |
Memory Binding Test | Â | Â | Â |
 Total free recall | 15.5 ± 4.4 | 15.8 ± 4.3 | 14.9 ± 4.7 |
 Pairs in free recall | 5.9 ± 2.8 | 6.0 ± 2.7 | 5.8 ± 3.0 |
 Total paired recall | 24.6 ± 4.2 | 24.6 ± 3.9 | 24.7 ± 4.8 |
 Paired recall pairs | 9.7 ± 3.7 | 9.7 ± 3.8 | 9.7 ± 3.5 |
 Total delayed free recall | 16.4 ± 4.9 | 16.6 ± 4.8 | 16.0 ± 5.1 |
 Pairs in delayed free recall | 6.3 ± 3.1 | 6.4 ± 3.0 | 6.1 ± 3.3 |
 Total delayed paired recall | 24.0 ± 4.6 | 23.9 ± 4.4 | 24.1 ± 5.2 |
Letter-Number Test | 9.0 ± 2.3 | 8.8 ± 2.1 | 9.7 ± 2.7 |
Digit span | 14.3 ± 3.2 | 14.1 ± 3.0 | 14.9 ± 3.4 |
D2 Test of Attention | 364.1 ± 94.0 | 355.6 ± 107.0 | 382.8 ± 52.8 |
TMT-A | 47.0 ± 21.5 | 47.6 ± 21.5 | 45.6 ± 22.0 |
TMT-B | 119.5 ± 67.7 | 123.4 ± 69.6 | 110.8 ± 63.8 |
Tower of London | 319.3 ± 113.2 | 338.6 ± 121.4 | 276.3 ± 78.8 |
Boston Naming Test | 12.1 ± 2.1 | 11.9 ± 2.1 | 12.5 ± 1.9 |
Salivary LF (μg/ml) | 6.2 ± 2.9 | 6.0 ± 2.9 | 6.5 ± 2.8 |
Saliva total protein (μg/ml) | 4.1 ± 1 | 4.1 ± 1.1 | 4.2 ± 1 |
Global Aβ load (SUVR) | 1.2 ± 0.3 | 1.1 ± 0.3 | 1.2 ± 0.3 |
FBB-PET (positive Aβ) | 10 | 7 | 3 |