Frequencies for first 10,000 rows of rx15v3c2 variable in nhamcsed2015 dataset For RX15, | level 3 of | MULTUM drug | category #2 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,994 99.94 99.94 180 | 1 0.01 99.95 198 | 2 0.02 99.97 210 | 1 0.01 99.98 211 | 1 0.01 99.99 387 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Nov 2017