Frequencies for first 10,000 rows of comstat4 variable in namcs1998 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        901        9.01        9.01
          2 |         98        0.98        9.99
          3 |         25        0.25       10.24
          . |      8,976       89.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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