Frequencies for first 10,000 rows of pricing_unit variable in nadac20161123 dataset : Indicates | the pricing | unit for | the | associated | NDC ('ML', | 'GM' or | 'EA') | Freq. Percent Cum. ------------+----------------------------------- EA | 8,332 83.32 83.32 GM | 572 5.72 89.04 ML | 1,096 10.96 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 10 Feb 2018