Example 4 for PROC GENMOD

/****************************************************************/
/*          S A S   S A M P L E   L I B R A R Y                 */
/*                                                              */
/*    NAME: GENMEX4                                             */
/*   TITLE: Example 4 for PROC GENMOD                           */
/* PRODUCT: STAT                                                */
/*  SYSTEM: ALL                                                 */
/*    KEYS: generalized linear models, ordinal multinomial      */
/*   PROCS: GENMOD                                              */
/*    DATA:                                                     */
/*                                                              */
/* SUPPORT: sasgjj                                              */
/*     REF: PROC GENMOD, EXAMPLE 4                              */
/*    MISC:                                                     */
/****************************************************************/

data Icecream;
   input count brand$ taste$;
   datalines;
70  ice1 vg
71  ice1 g
151 ice1 m
30  ice1 b
46  ice1 vb
20  ice2 vg
36  ice2 g
130 ice2 m
74  ice2 b
70  ice2 vb
50  ice3 vg
55  ice3 g
140 ice3 m
52  ice3 b
50  ice3 vb
;
proc genmod data=Icecream rorder=data;
   freq count;
   class brand;
   model taste = brand / dist=multinomial
                         link=cumlogit
                         aggregate=brand
                         type1;
   estimate 'LogOR12' brand 1 -1 / exp;
   estimate 'LogOR13' brand 1  0  -1 / exp;
   estimate 'LogOR23' brand 0  1  -1 / exp;
run;