Fig. 1.
Epigenetic age acceleration analysis of the first cohort. a Scatter-plot of DNA methylation age vs. chronological age. Spearman’s correlation analysis indicates a significant positive correlation or trend toward positive correlation between chronological age and DNA methylation age in SCZ and control groups. b, c, d Violin-plots of measures of epigenetic age acceleration. Mann–Whitney U-test was performed for comparisons between SCZ and control groups. CTL, control; SCZ, schizophrenia; AgeAccel, universal epigenetic age acceleration; IEAA, intrinsic epigenetic age acceleration; EEAA, extrinsic epigenetic age acceleration