PROC FORMAT creates user-defined formats to categorize the cake flavors and age of the participants. MULTILABEL allows overlapping ranges for age. 
proc format;
   value $flvrfmt
                'Chocolate'='Chocolate'
                'Vanilla'='Vanilla'
                'Rum','Spice'='Other Flavor';
   value agefmt (multilabel)
                  15 - 29='below 30 years'
                  30 - 50='between 30 and 50'
                  51 - high='over 50 years'
                  15 - 19='15 to 19'
                  20 - 25='20 to 25'
                  25 - 39='25 to 39'
                  40 - 55='40 to 55'
                  56 - high='56 and above'; 
run;