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Figure 3 Kaplan-Meier estimates of death or non-fatal sustained ventricular arrhythmia at 2 years of follow-up, comparing subgroups of patients with indeterminate MTWA results and those with positive MTWA results. The 2-year outcome rates were (bottom to top): noise or rapid HR rise 0.0%, positive MTWA test 12.3%, HR <105 beats/min 14.2%, unsustained MTWA 21.8%, and excessive ventricular ectopy during exercise 27.2%. Abbreviations as in Figure 2.
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