Frequencies for first 10,000 rows of dose_unit variable in drug2017q4 dataset :

    Unit of |
  drug dose |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,540       45.40       45.40
         DF |        224        2.24       47.64
          G |        105        1.05       48.69
        GTT |         23        0.23       48.92
         IU |         64        0.64       49.56
        MEQ |          9        0.09       49.65
         MG |      4,497       44.97       94.62
      MG/KG |        126        1.26       95.88
    MG/M**2 |        169        1.69       97.57
        MIU |         12        0.12       97.69
         ML |         37        0.37       98.06
       MMOL |          1        0.01       98.07
        PCT |         11        0.11       98.18
         UG |        177        1.77       99.95
      UG/KG |          3        0.03       99.98
         UL |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Jun 2018