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All-cause shock-free rate. Kaplan-Meier curve illustrating secondary end point result: freedom from all-cause shock at 18 months, compared with a performance goal of 85.8%. Performance goal was derived from the implantable cardioverter-defibrillator–only all-cause shock-free rate found in MADIT-RIT trial (Multicenter Automatic Defibrillator Implantation Trial–Reduce Inappropriate Therapy) arms B (high rate) and C (long duration). LCL indicates lower confidence limit.
