Question: Answer Problem 14.27 while controlling for possible age and initial-level differences between groups. Consider both parametric and nonparametric survival analysis methods? One issue is that

Answer Problem 14.27 while controlling for possible age and initial-level differences between groups. Consider both parametric and nonparametric survival analysis methods?

One issue is that the groups in Problem 14.27 may not be exactly balanced by age and/or initial level of serum creatinine.

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