Frequencies for additionaldrugcoverageoffere variable in pdp2015 dataset :

 Additional |
       Drug |
   Coverage |
 Offered in |
    the Gap |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          1        0.07        0.07
         No |      1,062       73.14       73.21
        Yes |        389       26.79      100.00
------------+-----------------------------------
      Total |      1,452      100.00

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