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

    Unit of |
  drug dose |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      5,509       55.09       55.09
         DF |        238        2.38       57.47
          G |        104        1.04       58.51
         GM |          1        0.01       58.52
        GTT |          7        0.07       58.59
         IU |         40        0.40       58.99
        MCI |          1        0.01       59.00
        MEQ |         13        0.13       59.13
         MG |      3,537       35.37       94.50
      MG/KG |        125        1.25       95.75
    MG/M**2 |         97        0.97       96.72
         ML |         56        0.56       97.28
         NG |          1        0.01       97.29
        PCT |          8        0.08       97.37
         UG |        260        2.60       99.97
      UG/KG |          2        0.02       99.99
       UNIT |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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