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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Circ Arrhythm Electrophysiol. 2018 Dec;11(12):e006730. doi: 10.1161/CIRCEP.118.006730

Figure 3.

Figure 3.

Survival Tree for 1-year death after VT ablation and Kaplan-Meyer analysis in derived groups. A. Survival Tree (left panel): The figure follows the schema of the Survival Tree with decisional points, nodes and final classification leafs shown in Figure 1. LVEF appears as the first decision point: patients with LVEF<30% had a higher death risk (HR 2), as compared to patients with LVEF ≥30% (HR: 0.2). In patients with LVEF≥30% occurrence of a previous ablation (Previous Abl) was identified as further splitting variable. In patients with LVEF<30%, 4 subsequent splitting variable were identified by the procedure, thus allowing for a more precise risk stratification: ES, LVEF, Age, Device. B (Right panel): Kaplan-Meier estimates with 95% confidence intervals of 1-year death for patients with low (green line), medium (yellow line) and high profile (red line).