Fig. 2.

Comparison of correlation of longitudinal atrophy (atrophy-rates) with continuous Aβ₄₂ (yellow) with respect to Ctrl vs PreAD two-sample t-test, i.e. categorical Aβ₄₂ (red), on the HCB + ADNI merged sample. Orange areas denote overlap of statistical maps. Correlation with continuous Aβ₄₂ showed to be more sensitive than the two-sample t-test.(For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)