Equal-Precision Bands :: SAS/STAT(R) 13.1 User's Guide

You can use the following statements to add equal-precision bands to the plot:

proc lifetest data=sashelp.BMT plots=survival(cb=ep test);
   time T * Status(0);
   strata Group;
run;

The results are displayed in Figure 23.5.

Figure 23.5: Equal-Precision Bands

You can use the following statements to add both Hall-Wellner and equal-precision bands to the plot:

proc lifetest data=sashelp.BMT plots=survival(cb=all test);
   time T * Status(0);
   strata Group;
run;

The results are displayed in Figure 23.6.

Figure 23.6: Hall-Wellner and Equal-Precision Bands