Table 4 Summary of PROC MIXED analysis for plasma biomarkers over two-time points.
From: P-tau217 and other blood biomarkers of dementia: variation with time of day
Main effect | |||||||
|---|---|---|---|---|---|---|---|
Variable | N | Time | Group | Time × group | |||
F (DF) | p | F (DF) | P | F (DF) | p | ||
P-tau217 | 21 | 7.77 (1, 17) | 0.013 | 7.35 (2, 17.9) | 0.005 | 3.66 (2, 17) | 0.048 |
Aβ40 | 38 | 3.86 (1, 32.6) | 0.058 | 1.19 (2, 34.2) | 0.315 | 0.42 (2, 32.6) | 0.662 |
Aβ42 | 38 | 1.89 (1, 32.9) | 0.179 | 0.73 (2, 34.7) | 0.488 | 0.54 (1, 32.9) | 0.5869 |
Aβ42/Aβ40 | 38 | 1.38 (1, 33.1) | 0.248 | 0.09 (2, 35) | 0.914 | 0.18 (2, 331.1) | 0.839 |
GFAP | 38 | 2.9 (1, 33) | 0.098 | 1.9 (2, 34.8) | 0.165 | 2.87 (2, 33) | 0.071 |
NfL | 38 | 0.27 (1, 33.2) | 0.606 | 1.03 (2, 35.1) | 0.367 | 0.72 (2, 33.2) | 0.495 |
