Fig. 5.
Comparison of the ability of DeepAtrophy PAIIR measure, ALOHA atrophy rate, and PACC score change rate to detect differences in the rates of disease progression between normal controls (A− NC) and three disease groups: preclinical AD (A+ NC), early prodromal AD (A+ eMCI) and late prodromal AD (A+ lMCI) using follow-up timepoints between (a) 180 to 400 days from baseline (one-year clinical trial scenario) and (b) 400 to 800 days from baseline (two-year clinical trial scenario). In each subplot, the Wilcoxon signed-rank test was conducted to compare each patient group with the control group, and the p-values were shown for each comparison. Abbreviations: PAIIR = predicted-to-actual interscan interval ratio; ALOHA = Automatic Longitudinal Hippocampal Atrophy software/package; PACC = Preclinical Alzheimer’s Cognitive Composite; A+/A− = beta-amyloid positive/negative; NC = cognitively normal adults; eMCI = early mild cognitive impairment; lMCI = late mild cognitive impairment; N = number of subjects in the diagnosis group.