Baseline | Visit 1 | Visit 2 | |
---|---|---|---|
Variable | (N = 59) | (N = 40) | (N = 7) |
Age at enrollment, mean (SD) | 75.9 (6.2) | 75.1 (6.4) | 77.8 (5.5) |
Male, no. (%) | 19 (32.2%) | 15 (37.5%) | 2 (28.6%) |
Years of education, mean (SD) | 14.6 (2.4) | 14.7 (2.6) | 14.6(2.8) |
Mini-Mental State Examination, mean (SD) | 28.7 (1.4) | 28.7 (1.5) | 28.4 (1.5) |
Race/ethnicity, no. (%) | |||
White | 49 (83.1%) | 32 (80.0%) | 5 (71.4%) |
Black | 9 (15.3%) | 7 (17.5%) | 1 (14.3%) |
Asian | 1 (1.7%) | 1 (2.5%) | 1(14.3%) |
APOE ε4 allele carrier, no. (%) | |||
Carrier | 11 (18.6%) | 28 (70.0%) | 1(14.3%) |
Non-carrier | 38 (64.4%) | 10 (25.0%) | 6 (85.7%) |
Data unavailable | 10 (16.9%) | 2 (14.3%) | 0 |
Global PiB SUVR, mean (SD) | 1.5 (0.4) | 1.5 (0.3) | 1.6 (0.6) |
PiB status, no. (%) | |||
Baseline | |||
PiB(+) | 25 (42.4%) | 15 (37.5%) | 3 (42.9%) |
PiB(−) | 34 (57.6%) | 25 (62.5%) | 4 (57.1%) |
Intracranial volume (cubic mm) | 1,771,813 (187,320.3) | 1,814,635 (209,336.6) | 1,888,776 (248,791) |
Glucose metabolism (FDG SUVR) | 1.1(0.1) | 1(0.1) | 1.1(0.1) |
Normalized hippocampal volume | 0.01 (0.04) | 0.01 (0.00) | 0.03 (0.00) |
Normalized WMH volume | 2.5 (0.6) | 2.4(0.6) | 2.5(0.5) |