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Risk score trajectories for the three models of tachycardia group and control group comparison. a Evolving risks for any tachycardia episode in the future. Number of cases = 787, number of controls = 707. b Evolving risks for the first tachycardia episode in the future. Number of cases = 240, number of controls = 240. c Life score to detect the risk within the same subject prior to the first episode. Number of cases = 235
