Customizing the Kaplan-Meier Survival Plot

Using the GROUP= Option

You can display the GROUP= variable in the graph. The following step illustrates: 

proc lifetest data=sashelp.BMT plots=survival(cb=hw atrisk(outside maxlen=13));
   time T * Status(0);
   strata / group=Group;
   format group $dfmt.;
run;

Some of the results are displayed in Figure 41.

Figure 41: Select Output from Both PROC LIFETEST Runs

The LIFETEST Procedure

Summary of the Number of Censored and Uncensored Values
Stratum Group Total Failed Censored Percent
Censored
1 ALL 38 24 14 36.84
1 AML—High Risk 45 34 11 24.44
1 AML—Low Risk 54 25 29 53.70
Total   137 83 54 39.42


csd

Last updated: March 08, 2022