Table 1 Baseline participant characteristics
From: Practice effects in a longitudinal, multi-center Alzheimer’s disease prevention clinical trial
Characteristics | Alternating versions | Same version |
|---|---|---|
(n = 1,803) | (n = 301) | |
Age, years, mean (SD) | 67.8 (5.2) | 68.6 (5.9) |
Race, n (%) | ||
African-American | 133 (7.4) | 27 (9.0) |
White | 1629 (90.4) | 249 (82.7) |
Other | 41 (2.3) | 25 (8.3) |
Education level, n (%) | ||
Unknown | 8 (0.4) | 0 (0.0) |
High school or lower | 447 (24.8) | 63 (20.9) |
Some college or higher | 1348 (74.8) | 238 (79.1) |