Fig. 2

Distribution of PS on sub-populations with and without a diagnosis (A), and diagnosis status, propensity score and covariates in each stratum (B-I). A Four red dotted lines represent the quintiles of the propensity score. Wilcoxon signed-rank test showed that the PSs were on average higher in the sub-populations without diagnosis (P-value < 0.001). B-I The X-axis of each graph is stratum 1 to 5, and all the data. Fig B represents the percentage of diagnosis status: dementia, MCI, normal and missing. Fig C-I represent the distribution of PS score (C), age (D), year of education (E), PADL score (F), IADL score (G), MMSE score (H), MoCA score (I) in each stratum