Frequencies for drugbenefittype variable in snp2017 dataset :

       Drug |
    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
      Basic |      6,952       78.04       78.04
   Enhanced |      1,956       21.96      100.00
------------+-----------------------------------
      Total |      8,908      100.00

by Jean Roth , jroth@nber.org , 6 Dec 2016