Fig. 3

Restricted cubic splines to flexibly model and visualize the relation of TyG index with PCAT attenuation. Red lines represent the estimated β, with light blue dashed lines denoting 95% confidence intervals (CIs). The background histograms (light gray color) represent the percent of the density distribution of the TyG index in the study population (right y-axis). The vertical gray dotted lines indicate the TyG index’s threshold value at 9.20. The horizontal green dotted lines represent the β of 0. TyG, triglyceride-glucose; PCAT, peri-coronary adipose tissue; CI, confidence interval