Frequencies for first 10,000 rows of cum_dose_unit variable in drug2014q3 dataset : Cumulative | dose to | first | reaction | unit | Freq. Percent Cum. ------------+----------------------------------- | 9,691 96.91 96.91 DF | 13 0.13 97.04 GM | 11 0.11 97.15 GTT | 3 0.03 97.18 IU | 3 0.03 97.21 MG | 276 2.76 99.97 ML | 1 0.01 99.98 UG | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 19 Apr 2017