Applied Linear Models II
Lab Goals Estimate survival functions for different strata in a dataset - Confidence intervals - Customized predictions Use non-parametric methods to compare groups Apply step-wise covariate adjustments to account for covariates
Survival in practice A study was conducted on 42 leukemia patients, half of whom received a certain new treatment therapy (6-Mercaptopurine) and the other half of whom received a standard treatment therapy. The goal was to compare remission survival times among the 2 treatment groups. (DATASET NAME: leukem.sas7bdat) Data Variables: SURVT : time (in weeks) from a patient's entry/randomization into the study to occurrence of relapse or censoring RELAPSE (1=relapsed, 0=censored) RX : treatment group (1=standard treatment, 0=new treatment) WBC : patient's white blood cell level at time of entry/randomization (1=low, 2=medium, 3=high)
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