Frequencies for first 10,000 rows of comstat2 variable in nhamcsopd1997 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,754       27.54       27.54
          2 |        458        4.58       32.12
          3 |        119        1.19       33.31
          . |      6,669       66.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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