Frequencies for first 10,000 rows of rx12v3c2 variable in nhamcsed2014 dataset : For RX12, | level 3 of | MULTUM drug | category #2 | (detailed | level) | Freq. Percent Cum. ------------+----------------------------------- | 9,990 99.90 99.90 180 | 1 0.01 99.91 185 | 1 0.01 99.92 198 | 2 0.02 99.94 203 | 1 0.01 99.95 211 | 1 0.01 99.96 235 | 1 0.01 99.97 386 | 1 0.01 99.98 388 | 1 0.01 99.99 389 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017