For the 27.5% participants with a CRT-defibrillator (CRT-D), there was a nonsignificant trend towards a reduced risk of the primary outcome in those receiving ablation vs. medical therapy (HR: 0.54; 95% CI: 0.28–1.04).
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The sentences
This finding was reproduced in all LVEF subgroups, although did not reach statistical significance in the those with LVEF ≤35%, most likely due to a relatively small sample size (see Figure 4 ).