Frequencies for first 10,000 rows of drugbenefittypedetail variable in ma2007 dataset :

       Drug |
    Benefit |
Type Detail |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,077       40.77       40.77
         AE |         65        0.65       41.42
         BA |      1,627       16.27       57.69
         DS |        139        1.39       59.08
         EA |      4,092       40.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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