Frequencies for first 10,000 rows of comstat4 variable in nhamcsopd2002 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,166       11.66       11.66
          2 |        119        1.19       12.85
          3 |         36        0.36       13.21
          . |      8,679       86.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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