Frequencies for first 10,000 rows of pricing_unit variable in nadac20160831 dataset : Indicates | the pricing | unit for | the | associated | NDC ('ML', | 'GM' or | 'EA') | Freq. Percent Cum. ------------+----------------------------------- EA | 8,338 83.38 83.38 GM | 569 5.69 89.07 ML | 1,093 10.93 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 10 Feb 2018