Frequencies for drugbenefittype variable in snp2012 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
      Basic |      4,749       64.39       64.39
   Enhanced |      2,626       35.61      100.00
------------+-----------------------------------
      Total |      7,375      100.00

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