Frequencies for first 10,000 rows of comstat2 variable in namcs1995 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,315       33.15       33.15
          2 |        763        7.63       40.78
          3 |        197        1.97       42.75
          . |      5,725       57.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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