data smoke;
  input agegrp sex smoke count;
  cards;
1 1 1 12
1 1 2 18
1 2 1 5
1 2 2 15
2 1 1 40
2 1 2 10
2 2 1 25
2 2 2 50
;
proc freq;
  tables agegrp *sex*smoke / chisq cmh relrisk;
  weight count;
run;