Frequencies for benefittype variable in pdp2013 dataset :

    Benefit |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
      Basic |        694       52.26       52.26
   Enhanced |        634       47.74      100.00
------------+-----------------------------------
      Total |      1,328      100.00

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