Frequencies for first 10,000 rows of comstat4 variable in nhamcsopd2000 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,214       12.14       12.14
          2 |        127        1.27       13.41
          3 |         52        0.52       13.93
          . |      8,607       86.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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