Boxplots depict differences in SINE Alu RNA processing ratio in all MAP patients with regard to final clinical diagnosis (p < 0.01 for the comparison between NCI and MCI, between NCI and AD, and between MCI and AD, unpaired, non directional t-test). NCI=no cognitive impairment (n=71), MCI=mild cognitive impairment (n=67), AD=Alzheimer's disease (n=87). Boxplot representation as in subfigure 2D. Boxplots depict differences in SINE Alu RNA processing ratio in all MAP patients (n=241) with regard to Braak stage classified into three categories (p = 0.004 for the comparison between 0-2 and 3-4, and p < 0.001 for the comparisons between 3-4 and 5-6 and between 0-2 and 5-6, unpaired, non directional t-test, n=39[0-2],n=148[3-4] and n=54[5-6]). Boxplot representation as in subfigure 2D. 