Frequencies for typeofadditionalcoverageoff variable in snp2012 dataset :

  Type of Additional Coverage |
           Offered in the Gap |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
                 All Generics |         81        1.10        1.10
  All Generics and All Brands |         10        0.14        1.23
  All Generics and Few Brands |         27        0.37        1.60
 All Generics and Some Brands |          1        0.01        1.61
                 Few Generics |         36        0.49        2.10
  Few Generics and Few Brands |          8        0.11        2.21
                Many Generics |        408        5.53        7.74
 Many Generics and Few Brands |         22        0.30        8.04
Many Generics and Many Brands |          1        0.01        8.05
Many Generics and Some Brands |          8        0.11        8.16
              No Gap Coverage |      6,408       86.89       95.05
                Some Generics |        359        4.87       99.92
 Some Generics and Few Brands |          6        0.08      100.00
------------------------------+-----------------------------------
                        Total |      7,375      100.00

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