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Unadjusted Kaplan-Meier survival curves, dichotomized by baseline sensed AV programming (nominal=120 ms). Hazard ratios adjusted for age, gender, DFT at implant, number of treatment zones, brady programming of DDD, LRL, VF detection rate, AF burden, LV pacing, and shock therapy. AV atrioventricular timing, VV ventricular-to-ventricular timing, DFT defibrillation threshold, LRL lower rate limit, VF ventricular fibrillation, AF atrial fibrillation, LV left ventricular
