Frequencies for first 10,000 rows of comstat4 variable in nhamcsopd1996 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,132       11.32       11.32
          2 |        114        1.14       12.46
          3 |         45        0.45       12.91
          . |      8,709       87.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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