Frequencies for first 10,000 rows of rx5v3c3 variable in nhamcsed2014 dataset : For RX5, | level 3 of | MULTUM drug | category #3 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,957 99.57 99.57 197 | 20 0.20 99.77 203 | 21 0.21 99.98 204 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017