Table 3.
Alzheimer’s Disease Biomarkers
| African American (n = 30) | White (n = 50) | p | |
| Aβ (pg/ml) | |||
| Triplex Aβ1-38 | 2029.2±672.9* | 2466.3±760.3 | 0.0268* |
| Triplex Aβ1-40 | 5020.9±1312.7 | 5750.0±1618.2 | 0.07 |
| Triplex Aβ1-42 | 413.1±107.5 | 419.9±150.0 | 0.85 |
| ELISA Aβ1-42 | 722.0±164.2 | 703.7±197.3 | 0.71 |
| Tau (pg/ml) | p (Wilcoxen) | ||
| t-tau | 199.0 (166.0 – 244.0) | 297.0* (228.0 – 423.0) | 0.0036* |
| p-tau | 37.0 (34.0 – 42.0) | 48.0* (37.0 – 64.0) | 0.0055* |
*p < 0.05. Aβ1-42/Aβ1-40, t-tau, and p-tau were non-parametric and necessitated use of Wilcoxen tests. Reported values for these variables are medians.