Figure 7. Baseline BrainAGE scores and baseline CSF biomarker concentrations in the MCI-subsample.

Shown are box plots for (A) BrainAGE scores, (B) T-Tau, (C) P-Tau, and (D) Aβ₄₂ concentration at baseline of all diagnostic groups in the subsample that also provides CSF data. The boxes contain the values between the 25th and 75th percentiles, including the median (grey line). Lines extending above and below each box symbolize data within 1.5 times the interquartile range (outliers are displayed with a +). Width of the boxes indicates the group size. Post-hoc t-tests resulted in significant differences between diagnostic groups only for baseline BrainAGE scores (p<0.05; red lines).