Frequencies for first 10,000 rows of comstat2 variable in nhamcsopd1993 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,571       25.71       25.71
          2 |        403        4.03       29.74
          3 |        224        2.24       31.98
          . |      6,802       68.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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