Table 1. Mediation Resultsa.
b (95% CI)b | P value | |
---|---|---|
ADNI | ||
Global | 0.15 (0.05 to 0.28) | .01c |
Braak I | 0.03 (−0.09 to 0.14) | .68 |
Braak III | 0.19 (0.07 to 0.32) | <.001c |
Braak IV | 0.17 (0.06 to 0.30) | .01c |
Braak V | 0.12 (0.01 to 0.24) | .03c |
Braak VI | 0.09 (−0.02 to 0.21) | .11c |
Avid-A05 | ||
Global | 0.33 (0.14 to 0.54) | <.001c |
Braak I | −0.02 (−0.17 to 0.13) | .78 |
Braak III | 0.33 (0.14 to 0.54) | <.001c |
Braak IV | 0.28 (0.11 to 0.48) | <.001c |
Braak V | 0.34 (0.15 to 0.55) | <.001c |
Braak VI | 0.27 (0.10 to 0.46) | <.001c |
Abbreviation: ADNI, Alzheimer’s Disease Neuroimaging Initiative.
The mediation models are controlled for age and sex. Additional mediation models correcting for diagnosis are shown in eTable 3 in Supplement 1.
Values are average causal mediation effect values derived from mediation analyses with apolipoprotein E ε4 risk as predictor, centiloid as mediator, and the annual tau standardized uptake value ratio rate of change in the respective Braak stage as the dependent variable.
Significant at false discovery rate–corrected P < .05.