Table 1.
Baseline characteristics
| Characteristics | Healthy young adult subjects n = 48 | Healthy elderly subjects n = 29 | AD subjects n = 11 |
| Age (y), mean (SD) | 33.4 (6.3) | 63.8 (4.0) | 69.2 (7.1) |
| Sex, n (%) | |||
| Male | 100 (0) | 14 (48.3) | 5 (45.5) |
| Female | 0 (0) | 15 (51.7) | 6 (54.5) |
| Race, n (%) | |||
| American Indian or Alaska Native | 2 (4.2) | 0 (0) | 0 (0) |
| Asian | 0 (0) | 1 (3.4) | 0 (0) |
| Black or African American | 37 (77.1) | 13 (44.8) | 0 (0) |
| White | 9 (18.8) | 15 (51.7) | 11 (100) |
| Ethnicity, n (%) | |||
| Hispanic or Latino | 11 (22.9) | 4 (13.8) | 1 (9.1) |
| Not Hispanic or Latino | 37 (77.1) | 25 (86.2) | 10 (90.9) |
| BMI (kg/m2), mean (SD) | 26.1 (2.7) | 27.0 (2.2) | 25.9 (3.9) |
| Education (y), mean (SD) | 13.5 (2.0) | 14.2 (3.7) | 12.7 (5.2) |
| MMSE, median (range) | NA | NA | 20 (5–29) |
AD, Alzheimer’s disease; BMI, body mass index; MMSE, Mini-Mental State Exam; NA, not applicable; SD, standard deviation.