The set of variables selected by Lasso for classification of Alzheimer’s disease vs. a healthy diagnosis (left column) and Alzheimer’s disease vs. MCI (right column).

Highlighted rows show variables that are selected by both classification tasks. The baseline value of a variable is denoted by the suffix _BL. First order terms such as (Incr. Ventricles) denote the increment of a variable and second order terms such as (Hippocampus, Time) are area terms. Highlighted rows show features selected in both classification tasks.