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Figure 2 Number of episodes by arm. (A) True ventricular tachycardia/ventricular fibrillation (VT/VF) episodes. (B) True supraventricular tachycardia or other non-VT/VF event (SVT) episodes. Solid bars = shocked; ruled bars = not shocked. GEE = general estimating equation adjustment for multiple recurrences per patient.