Frequencies for first 10,000 rows of rx17v3c2 variable in nhamcsed2014 dataset : For RX17, | level 3 of | MULTUM drug | category #2 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,996 99.96 99.96 198 | 1 0.01 99.97 210 | 1 0.01 99.98 211 | 1 0.01 99.99 385 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017