Kaplan-Meier representation of combined survival model based on IPI score and miRNAs. Survival scores according to IPI and miRNAs were calculated for each patient in the test group according to the combined survival function obtained in the training set of patients (see “Generation of a miRNA-based predictor model using FFPE tissue samples”). After tercile stratification, Kaplan-Meier estimates were plotted for OS and PFS (log-rank test, P < .001 for both OS and PFS). Hazard ratios estimated from the models are shown in Figure 3.