Frequencies for first 10,000 rows of drugbenefittype variable in planreport2013 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,854       68.54       68.54
      Basic |        929        9.29       77.83
   Enhanced |      2,217       22.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016