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Figure 1 Kaplan-Meier estimates of death or non-fatal sustained ventricular arrhythmia comparing patients with negative, positive, and indeterminate microvolt T-wave alternans (MTWA) results. The 2-year event rates were (bottom to top): negative 2.4%, positive 12.3%, and indeterminate 17.8%. There was no significant difference between the positive and indeterminate curves (log-rank test).
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