Figure 1.

(a) Age distribution of the brains from which the data sets used in the study were derived. The error bars show the standard deviation of the sample frequency for different brain regions in data sources with multiple brain regions. (b) Hypothetical gene expression plots, demonstrating how Spearman's correlation coefficient and p‐value behave when the association is weak or nonmonotonic. (c) Pairwise Spearman's rank correlation coefficients across data sets. The intensity of the colours on the heatmap shows the magnitude of the correlation coefficient