Frequencies for first 10,000 rows of comstat1 variable in nhamcsopd1998 dataset :

composition |
status code |
        for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,928       49.28       49.28
          2 |      1,174       11.74       61.02
          3 |        293        2.93       63.95
          . |      3,605       36.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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