Frequencies for first 10,000 rows of comstat4 variable in nhamcsopd1993 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        780        7.80        7.80
          2 |         94        0.94        8.74
          3 |         84        0.84        9.58
          . |      9,042       90.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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