Frequencies for first 10,000 rows of comstat2 variable in nhamcsopd1996 dataset :

composition |
status code |
        for |
 medication |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,081       30.81       30.81
          2 |        474        4.74       35.55
          3 |        165        1.65       37.20
          . |      6,280       62.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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