Frequencies for first 10,000 rows of comstat3 variable in namcs1997 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,660       26.60       26.60
          2 |        307        3.07       29.67
          3 |         64        0.64       30.31
          . |      6,969       69.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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