Frequencies for first 10,000 rows of typeofextracoverageoffered variable in snp2009 dataset :

       Type of Extra Coverage |
           Offered in the Gap |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
          All Formulary Drugs |        422        4.22        4.22
                 All Generics |        175        1.75        5.97
  All Generics and Few Brands |         24        0.24        6.21
                 Few Generics |          8        0.08        6.29
  Few Generics and Few Brands |      1,564       15.64       21.93
                Many Generics |        613        6.13       28.06
 Many Generics and Few Brands |        581        5.81       33.87
Many Generics and Some Brands |          8        0.08       33.95
              No Gap Coverage |      6,526       65.26       99.21
                Some Generics |         79        0.79      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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