Frequencies for first 10,000 rows of rx14v3c2 variable in nhamcsed2014 dataset : For RX14, | level 3 of | MULTUM drug | category #2 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,994 99.94 99.94 198 | 2 0.02 99.96 211 | 3 0.03 99.99 385 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017