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Figure 2 Predictive Value in Subgroups
The unadjusted risk of the primary outcome of cardiac death or resuscitated cardiac arrest (A) and the secondary outcomes of fatal or nonfatal cardiac arrest (B) and all-cause mortality (C) for patients with versus without both abnormal heart rate turbulence and abnormal Holter repolarization alternans are shown. The central estimate and 95% confidence interval for the hazard ratio in subgroups and overall are shown. LVEF = left ventricular ejection fraction; MI = myocardial infarction.
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