Frequencies for first 10,000 rows of comstat2 variable in namcs1999 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,018       30.18       30.18
          2 |        453        4.53       34.71
          3 |        151        1.51       36.22
          . |      6,378       63.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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