Frequencies for first 10,000 rows of comstat3 variable in namcs1996 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,048       30.48       30.48
          2 |        451        4.51       34.99
          3 |         77        0.77       35.76
          . |      6,424       64.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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