Frequencies for first 10,000 rows of typeofextracoverageoffered variable in ma2010 dataset :

   Type of Extra Coverage |
       Offered in the Gap |      Freq.     Percent        Cum.
--------------------------+-----------------------------------
                          |      8,839       88.39       88.39
             All Generics |         96        0.96       89.35
             Few Generics |        179        1.79       91.14
  Few Generics, Few Brand |        203        2.03       93.17
            Many Generics |        105        1.05       94.22
 Many Generics, Few Brand |         27        0.27       94.49
          No Gap Coverage |        542        5.42       99.91
            Some Generics |          9        0.09      100.00
--------------------------+-----------------------------------
                    Total |     10,000      100.00

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