Frequencies for first 10,000 rows of comstat4 variable in namcs2001 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        894        8.94        8.94
          2 |         70        0.70        9.64
          3 |         20        0.20        9.84
          . |      9,016       90.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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