Frequencies for first 10,000 rows of typeofextracoverageinthega variable in planreport2011 dataset :

Type of Extra Coverage in the |
                          Gap |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                              |      8,602       86.02       86.02
                 All Generics |         13        0.13       86.15
  All Generics and Few Brands |         27        0.27       86.42
                   Few Brands |          4        0.04       86.46
                 Few Generics |         57        0.57       87.03
  Few Generics and Few Brands |        412        4.12       91.15
     Few Generics, Few Brands |        105        1.05       92.20
                Many Generics |        224        2.24       94.44
 Many Generics and Few Brands |         11        0.11       94.55
Many Generics and Some Brands |         21        0.21       94.76
    Many Generics, Few Brands |          7        0.07       94.83
   Many Generics, Some Brands |          7        0.07       94.90
                Some Generics |        476        4.76       99.66
Some Generics and Some Brands |         21        0.21       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