Fig. 4

Correlogram showing the Pearson correlation coefficients between pairs of variables, computed across all subjects and categorized according to the variable groupings in Supplementary Tables S1–5. Correlation coefficients are color-coded as indicated. Dark blue (respectively red) on the correlogram indicates strong positive (respectively negative) correlations in variables’ Z-scores. Asterisks indicate statistically significant correlations (p < 0.05). Definitions of the physical function categories 1–17 are listed in Supplementary Table S3