Table 3 Summary of PROC MIXED analysis for plasma biomarkers over nine-time points.
From: P-tau217 and other blood biomarkers of dementia: variation with time of day
Main effect, (N = 21) | ||||||
|---|---|---|---|---|---|---|
Variable | Time | Group | Time × group | |||
F (DF) | p | F (DF) | p | F (DF) | p | |
P-tau217 | 4.29 (8, 121) | 0.0001 | 8.57 (2, 17.9) | 0.003 | 1.28 (16, 121) | 0.219 |
Aβ40 | 4.78 (8, 121) | <0.0001 | 0.72 (2, 17.9) | 0.501 | 0.92 (16, 121) | 0.549 |
Aβ42 | 6.36 (8, 121) | <0.0001 | 0.98 (2, 17.9) | 0.393 | 0.66 (16, 121) | 0.824 |
Aβ42/Aβ40 | 3 (8, 121) | 0.0042 | 1.46 (2, 18) | 0.259 | 1 (16, 121) | 0.466 |
GFAP | 1.91 (8, 121) | 0.065 | 3.1 (2, 18) | 0.069 | 1.26 (16, 121) | 0.232 |
NfL | 2.05 (8, 121) | 0.046 | 1.41 (2, 18) | 0.270 | 0.91 (16, 121) | 0.558 |
