Frequencies for first 10,000 rows of comstat4 variable in namcs2015 dataset :

Composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,916       29.16       29.16
          2 |        218        2.18       31.34
          3 |         66        0.66       32.00
          . |      6,800       68.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017