Proc format

Simple
Generic:

proc format; value FORMAT1 1= 'LABEL1' 2 = 'LABEL2'; run; proc freq; tables VAR1*VAR2; format VAR1 FORMAT1.; run;

Example:

proc format; value SEXES 1= 'MALE' 2 = 'FEMALE'; run; proc freq; tables SEX*EDUCATION; by COMPANY; format SEX SEXES.; run;

This would label the categorical variable SEX with the format SEXES: "MALE" and "FEMALE". These would appear on the table produced by proc freq instead of "1" or "2".