Frequencies for first 10,000 rows of comstat4 variable in namcs1997 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,491       14.91       14.91
          2 |        138        1.38       16.29
          3 |         30        0.30       16.59
          . |      8,341       83.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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