Frequencies for first 10,000 rows of comstat3 variable in namcs1999 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,696       16.96       16.96
          2 |        214        2.14       19.10
          3 |         67        0.67       19.77
          . |      8,023       80.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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