/*-----------------------------------------------------------------
            S A S   S A M P L E   L I B R A R Y                   
                                                                  
      NAME: LIFEREX6                                              
     TITLE: Example 6 for PROC LIFEREG                            
   PRODUCT: STAT                                                  
    SYSTEM: ALL                                                   
      KEYS: survival data analysis, probability plotting          
     PROCS: LIFEREG                                               
      DATA:                                                       
                                                                  
   SUPPORT: lichen                                                
       REF: PROC LIFEREG, EXAMPLE 6.                              
      MISC:                                                       
-----------------------------------------------------------------*/


data Micro;
   input t1 t2 f;
   datalines;
. 6 6
6 12 2
12 24 0
24 48 2
24 .  1
48 168 1
48 .   839
168 500 1
168 .   150
500 1000 2
500 .    149
1000 2000 1
1000 . 147
2000 . 122
;

ods graphics on;
proc lifereg data=Micro;
   model ( t1 t2 ) = / d=lognormal intercept=25 scale=5;
   weight f;
   probplot
   pupper = 10
   itprintem
   printprobs
   maxitem = (1000,25)
   ppout;
   inset;
run;