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

    Unit of |
  drug dose |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      5,718       57.18       57.18
         DF |        173        1.73       58.91
          G |         78        0.78       59.69
         GM |          2        0.02       59.71
        GTT |          6        0.06       59.77
         IU |         38        0.38       60.15
          L |          6        0.06       60.21
        MEQ |          9        0.09       60.30
         MG |      3,398       33.98       94.28
      MG/KG |         73        0.73       95.01
    MG/M**2 |         56        0.56       95.57
        MIU |          3        0.03       95.60
         ML |         78        0.78       96.38
       MMOL |          1        0.01       96.39
        PCT |         22        0.22       96.61
         UG |        339        3.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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