DATA myel;
INPUT dur status treat renal;
DATALINES;
8 1 1 1
180 1 2 0
632 1 2 0
852 0 1 0
52 1 1 1
2240 0 2 0
220 1 1 0
63 1 1 1
195 1 2 0
76 1 2 0
70 1 2 0
8 1 1 0
13 1 2 1
1990 0 2 0
1976 0 1 0
18 1 2 1
700 1 2 0
1296 0 1 0
1460 0 1 0
210 1 2 0
63 1 1 1
1328 0 1 0
1296 1 2 0
365 0 1 0
23 1 2 1
;

ODS GRAPHICS ON;
PROC LIFETEST DATA=myel PLOTS=S;
TIME dur*status(0);
RUN;
ODS GRAPHICS OFF;
ODS GRAPHICS ON;
PROC LIFETEST DATA=myel PLOTS=S(TEST);
TIME dur*status(0);
STRATA treat;
RUN;
ODS GRAPHICS OFF;
PROC LIFETEST DATA=myel PLOTS=S(TEST);
TIME dur*status(0);
STRATA renal;
RUN;
ODS GRAPHICS OFF;