Frequencies for first 10,000 rows of drugbenefittype variable in ma2010 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,130       61.30       61.30
      Basic |      1,389       13.89       75.19
   Enhanced |      2,481       24.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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