Frequencies for first 10,000 rows of rx5v3c3 variable in nhamcsed2012 dataset : For RX5, | level 3 of | MULTUM drug | category #3 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,967 99.67 99.67 197 | 16 0.16 99.83 203 | 15 0.15 99.98 204 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Nov 2016