Frequencies for benefittype variable in pdp2009 dataset :

    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
      Basic |      1,201       46.86       46.86
   Enhanced |      1,362       53.14      100.00
------------+-----------------------------------
      Total |      2,563      100.00

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