Fig. 2
From: Functional activity level reported by an informant is an early predictor of Alzheimer’s disease
Confusion Matrix. The 2 \(\times\) 2 confusion matrix computed for the sMCI and cAD labels returned from applying the trained nonlinear RF model prediction on the test set compared with the co-occurrences of the true (observed) sMCI/cAD (longitudinal defined diagnose) labels. The diagonal cells represent correctly classified subjects (the number of occurrences in each cell is given as N, TN: true negative, TP: true positive, FP: false positive, FN: false negative), and these cells are shaded in blue. Off-diagonal cells represent various events of misclassification. Observed/predicted co-occurrences are also accompanied, for each cell, with corresponding information about sex ratio (F/M), mean(SD) in; FAQ: Functional Activity Questioner, GDS: Geriatric Depression Scale, RAVLT-Im: Rey Auditory Verbal Learning Test immediate recall, TMTB: Trail Making Test part B, HC: hippocampus volume, LVV: lateral ventricle volume