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KM survival curves. (a) Mortality related to RRT; the grey lines correspond to the group of PM patients who received the device while on RRT and the black line corresponds to those who received the PM before entering the RRT program. Log rank (mantel-Cox); Chi-Square 6,2 df 1; P = 0.012. (b) Mortality regarding PM mode, DDD versus VVI pacing. The grey line corresponds to the VVI PMs and the black line to the DDD devices. Log rank (mantel-Cox) Chi-Square 11,31 df 1; P = 0.001.
