Frequencies for typeofextracoverageoffered variable in snp2010 dataset :

       Type of Extra Coverage |
           Offered in the Gap |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
          All Formulary Drugs |         40        0.46        0.46
                 All Generics |        164        1.88        2.34
  All Generics and Few Brands |         14        0.16        2.50
  Few Generics and Few Brands |         40        0.46        2.96
                Many Generics |        424        4.86        7.82
 Many Generics and Few Brands |        106        1.22        9.03
Many Generics and Some Brands |          6        0.07        9.10
              No Gap Coverage |      7,339       84.14       93.25
                Some Generics |        588        6.74       99.99
 Some Generics and Few Brands |          1        0.01      100.00
------------------------------+-----------------------------------
                        Total |      8,722      100.00

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