Frequencies for first 10,000 rows of comstat3 variable in nhamcsopd1999 dataset :

composition |
status code |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,812       18.12       18.12
          2 |        231        2.31       20.43
          3 |         80        0.80       21.23
          . |      7,877       78.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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