Frequencies for first 10,000 rows of drugbenefittype variable in ma2012 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,256       62.56       62.56
      Basic |      1,190       11.90       74.46
   Enhanced |      2,554       25.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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