Frequencies for first 10,000 rows of drugbenefittype variable in ma2008 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,130       61.30       61.30
      Basic |      1,098       10.98       72.28
   Enhanced |      2,772       27.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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