Outcomes in the study vs. comparator groups. Kaplan–Meier curves are shown for patients with viral myocarditis (n = 68) and early-phase polymorphic vs. monomorphic, as compared with control patients with virus-negative myocarditis (n = 70). Curves refer to the endpoint of major adverse events (i.e. all-cause death, complicated heart failure, advanced atrioventricular blocks, or major ventricular arrhythmias) by 24-month follow-up. Numbers at risk are reported under the chart. The significance of log rank test is shown for each couple of curves, as well as for all groups. MAE, major adverse events; VA, ventricular arrhythmias; M, monomorphic; P, polymorphic; VNM, virus-negative myocarditis.