Frequencies for first 10,000 rows of cum_dose_unit variable in drug2013q4 dataset :

 Cumulative |
    dose to |
      first |
   reaction |
       unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,859       98.59       98.59
         DF |          7        0.07       98.66
         GM |          2        0.02       98.68
         IU |          2        0.02       98.70
         MG |        123        1.23       99.93
         ML |          3        0.03       99.96
         UG |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2017