Frequencies for first 10,000 rows of rx4v3c3 variable in nhamcsed2014 dataset : For RX4, | level 3 of | MULTUM drug | category #3 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,937 99.37 99.37 185 | 1 0.01 99.38 197 | 27 0.27 99.65 203 | 27 0.27 99.92 204 | 8 0.08 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017