Frequencies for first 10,000 rows of rx6v3c3 variable in nhamcsopd2011 dataset : For RX6, | level 3 of | MULTUM drug | category #3 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,989 99.89 99.89 185 | 1 0.01 99.90 197 | 1 0.01 99.91 203 | 8 0.08 99.99 204 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016