Frequencies for first 10,000 rows of dose_unit variable in drug2015q3 dataset : Unit of | drug dose | Freq. Percent Cum. ------------+----------------------------------- | 4,528 45.28 45.28 BQ | 1 0.01 45.29 CI | 1 0.01 45.30 DF | 183 1.83 47.13 G | 68 0.68 47.81 GTT | 16 0.16 47.97 IU | 51 0.51 48.48 KIU | 1 0.01 48.49 L | 4 0.04 48.53 MBQ | 3 0.03 48.56 MEQ | 15 0.15 48.71 MG | 4,546 45.46 94.17 MG/KG | 65 0.65 94.82 MG/M**2 | 143 1.43 96.25 MIU | 1 0.01 96.26 ML | 41 0.41 96.67 MMOL | 1 0.01 96.68 PCT | 18 0.18 96.86 UG | 311 3.11 99.97 UG/KG | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 19 Apr 2017