Frequencies for first 10,000 rows of comstat3 variable in nhamcsopd2002 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,801       18.01       18.01
          2 |        196        1.96       19.97
          3 |         74        0.74       20.71
          . |      7,929       79.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016