Frequencies for first 10,000 rows of rx19cat2 variable in nhamcsed2014 dataset : For RX19, | MULTUM drug | category #2 | - most | detailed | level (can | be either | Level 1,2 | Freq. Percent Cum. ------------+----------------------------------- | 9,997 99.97 99.97 117 | 1 0.01 99.98 129 | 1 0.01 99.99 211 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 11 Apr 2017