Frequencies for first 10,000 rows of comstat1 variable in nhamcsopd2000 dataset :

composition |
status code |
        for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,750       47.50       47.50
          2 |        953        9.53       57.03
          3 |        293        2.93       59.96
          . |      4,004       40.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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