Frequencies for first 10,000 rows of rx25v3c1 variable in nhamcsed2014 dataset : For RX25, | level 3 of | MULTUM drug | category #1 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,994 99.94 99.94 060 | 1 0.01 99.95 069 | 2 0.02 99.97 154 | 1 0.01 99.98 301 | 1 0.01 99.99 368 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017