Secondary efficacy endpoint
The independent predictors of mortality identified by survival regression analysis were ES at presentation, NYHA class III or IV, age, LVEF, IHD and C-ABL (Table 3).
In sub-group analysis, the survival improvement with a combined strategy was only statistically significant in patients undergoing a redo procedure (P for interaction = 0.04). As in the primary efficacy endpoint, this finding was consistent in both IHD and NICM patients (P for interaction = 0.231).