Frequencies for first 10,000 rows of comstat2 variable in nhamcsopd1995 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,931       29.31       29.31
          2 |        474        4.74       34.05
          3 |        146        1.46       35.51
          . |      6,449       64.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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