Frequencies for first 10,000 rows of cum_dose_unit variable in drug2018q4 dataset : Cumulative | dose to | first | reaction | unit | Freq. Percent Cum. ------------+----------------------------------- | 9,304 93.04 93.04 DF | 37 0.37 93.41 G | 17 0.17 93.58 IU | 4 0.04 93.62 KIU | 1 0.01 93.63 L | 2 0.02 93.65 MG | 622 6.22 99.87 MG/KG | 1 0.01 99.88 MG/M2 | 2 0.02 99.90 ML | 3 0.03 99.93 UG | 6 0.06 99.99 UG/KG | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Mar 2019