Frequencies for first 10,000 rows of comstat7 variable in namcs2004 dataset :

composition |
status code |
        for |
 medication |
         #7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        431        4.31        4.31
          2 |         42        0.42        4.73
          3 |         13        0.13        4.86
          . |      9,514       95.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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