Frequencies for first 10,000 rows of comstat2 variable in nhamcsopd2002 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,804       28.04       28.04
          2 |        358        3.58       31.62
          3 |        128        1.28       32.90
          . |      6,710       67.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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