borderline significancep = 0.06
Primary endpoint The meta-analysis of pooled hazard ratios in all trials, including a total of 1789 patients, showed that all-cause mortality in the ICD group decreased with borderline significance (167 of 886 patients, i.e. 19%) in comparison to optimal pharmacological treatment (195 of 895 patients, i.e. 22%), with a HR of 0.48 (95% CI 0.67–0.10); p = 0.06; heterogeneity p = 0.78; I 2 = 0% ( Fig. 2 ).