* Chinese Smoking Data for CMH Analysis;

data cmh;

 /* center(1-7) : cities in China */

 /* smoke and cancer : 1=Yes, 2=No */



center    smoke    cancer    count

----------------------------------

   1        1         1       126

   1        1         2       100

   1        2         1        35

   1        2         2        61

   2        1         1       908

   2        1         2       688

   2        2         1       497

   2        2         2       807

   3        1         1       913

   3        1         2       747

   3        2         1       336

   3        2         2       598

   4        1         1       235

   4        1         2       172

   4        2         1        58

   4        2         2       121

   5        1         1       402

   5        1         2       308

   5        2         1       121

   5        2         2       215

   6        1         1       182

   6        1         2       156

   6        2         1        72

   6        2         2        98

   7        1         1        60

   7        1         2        99

   7        2         1        11

   7        2         2        43

   8        1         1       104

   8        1         2        89

   8        2         1        21

   8        2         2        36