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Figure 1 Distribution of sudden cardiac death (SCD), non-sudden cardiac death (NSCD), and unclassified cardiac deaths in the conventional and defibrillator therapy groups of MADIT-II, which randomized 490 patients to the conventional group and 742 patients to the defibrillator group. A total of 80 cardiac deaths occurred in the conventional group and 79 in the defibrillator group, with a cardiac death rate of 16.3% and 10.6%, respectively. The overall size of the two pie graphs is roughly proportional to the relative cardiac mortality rates in the two treatment groups. Sudden cardiac death makes up 61% of the cardiac deaths in the conventional therapy group and 35% in the defibrillator group, with reverse percentages for NSCD. The unlabeled solid-black area of each graph represents the percentage of unclassified cardiac deaths in each group.
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