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a Hyperkalemia tree with 5 nodes, training sample. *Includes individuals with missing recent potassium values. *c-statistic in the training sample was 0.76, and in the hold out sample was 0.76. b Hypokalemia tree with 4 nodes, training sample. *Includes individuals with missing recent potassium values *c-statistic in the training sample was 0.76, and in the hold out sample was 0.77.
