Frequencies for first 10,000 rows of cum_dose_unit variable in drug2018q2 dataset : Cumulative | dose to | first | reaction | unit | Freq. Percent Cum. ------------+----------------------------------- | 9,347 93.47 93.47 DF | 13 0.13 93.60 G | 5 0.05 93.65 Gtt | 2 0.02 93.67 IU | 3 0.03 93.70 MG | 607 6.07 99.77 MG/KG | 6 0.06 99.83 MG/M2 | 1 0.01 99.84 ML | 2 0.02 99.86 UG | 14 0.14 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 8 Sep 2018