Frequencies for first 10,000 rows of rx13v1c2 variable in nhamcsed2014 dataset : For RX13, | level 1 of | MULTUM drug | category #2 | (broad | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,988 99.88 99.88 001 | 2 0.02 99.90 040 | 2 0.02 99.92 057 | 3 0.03 99.95 122 | 3 0.03 99.98 218 | 1 0.01 99.99 242 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017