Fig. 2: Distribution of SmPEGS in the Dunedin Study at two time points across 12 years as a function of smoking history at age-38.
From: Establishing a generalized polyepigenetic biomarker for tobacco smoking

The figure shows Smoking methylation Polygenic Score (SmPEGS) were reduced for those who ceased to smoke between the two DNA methylation assessments at ages 26 and 38. Black points represent means within each group connected by lines across the two assessment phases