Frequencies for first 10,000 rows of drugbenefittype variable in ma2011 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,376       63.76       63.76
      Basic |      1,288       12.88       76.64
   Enhanced |      2,336       23.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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