Frequencies for first 10,000 rows of comstat2 variable in nhamcsopd1998 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,042       30.42       30.42
          2 |        406        4.06       34.48
          3 |        157        1.57       36.05
          . |      6,395       63.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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