Frequencies for first 10,000 rows of rx12cat2 variable in nhamcsed2013 dataset : For RX12, | MULTUM drug | category #2 | - most | detailed | level (can | be either | Level 1,2 | Freq. Percent Cum. ------------+----------------------------------- | 9,990 99.90 99.90 123 | 2 0.02 99.92 124 | 1 0.01 99.93 129 | 2 0.02 99.95 196 | 1 0.01 99.96 239 | 1 0.01 99.97 385 | 1 0.01 99.98 386 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Nov 2016