Frequencies for first 10,000 rows of comstat4 variable in nhamcsopd1998 dataset :

composition |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        974        9.74        9.74
          2 |        127        1.27       11.01
          3 |         42        0.42       11.43
          . |      8,857       88.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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