Fig. 3From: Post-systolic shortening is superior to global longitudinal strain in predicting adverse events in patients with stable coronary artery disease and preserved systolic functionRestricted cubic splines of nonlinear association between LnPSI and hazard ratio. The bold red lines indicate the pooled restricted cubic spline model, and the red filled area indicates the 95% confidence intervals of the pooled curve. PSI: post-systolic indexBack to article page