Frequencies for drugbenefittype variable in snp2015 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
      Basic |      6,985       79.68       79.68
   Enhanced |      1,781       20.32      100.00
------------+-----------------------------------
      Total |      8,766      100.00

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