Frequencies for first 10,000 rows of cum_dose_unit variable in drug2012q4 dataset :

 Cumulative |
    dose to |
      first |
   reaction |
       unit |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,794       97.94       97.94
         DF |         12        0.12       98.06
         GM |          8        0.08       98.14
         MG |        179        1.79       99.93
      MG/KG |          3        0.03       99.96
    MG/M**2 |          2        0.02       99.98
         ML |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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