Frequencies for drugbenefittype variable in snp2011 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
      Basic |      3,129       49.46       49.46
   Enhanced |      3,197       50.54      100.00
------------+-----------------------------------
      Total |      6,326      100.00

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