Frequencies for first 10,000 rows of drugbenefittypedetail variable in snp2008 dataset :

       Drug |
    Benefit |
Type Detail |      Freq.     Percent        Cum.
------------+-----------------------------------
         AE |         49        0.49        0.49
         BA |      1,512       15.12       15.61
         DS |      2,070       20.70       36.31
         EA |      6,369       63.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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