Derivate score for MAACE in the derivation cohort. (A) Table of reclassification of the composite risk score integrating clinical, functional, and tissue characteristics (assessed by CMR) compared to the model applying current guidelines criteria (TTE-LVEF ≤35% model and NYHA functional Classes II and III). Green and red colours indicate correct and incorrect reclassification, respectively. (B) Kaplan–Meier curves according to the TTE-LVEF model. (C) Kaplan–Meier curves according to composite risk score. CMR, cardiac magnetic resonance; IDI, integrated discrimination index; MAACE, major adverse arrhythmic cardiac events; NRI, net reclassification improvement; NYHA, New York Heart Association; TTE-LVEF, transthoracic echocardiography-left ventricle ejection fraction.