Frequencies for first 10,000 rows of typeofextracoverageinthega variable in planreport2012 dataset :

Type of Extra Coverage in the |
                          Gap |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                              |      8,707       87.07       87.07
                 All Generics |          3        0.03       87.10
  All Generics and Few Brands |         27        0.27       87.37
                   Few Brands |          4        0.04       87.41
                 Few Generics |         71        0.71       88.12
  Few Generics and Few Brands |        352        3.52       91.64
     Few Generics, Few Brands |        139        1.39       93.03
                Many Generics |        156        1.56       94.59
 Many Generics and Few Brands |         14        0.14       94.73
Many Generics and Some Brands |          6        0.06       94.79
    Many Generics, Few Brands |          7        0.07       94.86
   Many Generics, Some Brands |          7        0.07       94.93
                Some Generics |        481        4.81       99.74
Some Generics and Some Brands |         13        0.13       99.87
    Some Generics, Few Brands |          6        0.06       99.93
   Some Generics, Some Brands |          7        0.07      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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