Frequencies for first 10,000 rows of rx11cat2 variable in nhamcsed2013 dataset : For RX11, | MULTUM drug | category #2 | - most | detailed | level (can | be either | Level 1,2 | Freq. Percent Cum. ------------+----------------------------------- | 9,991 99.91 99.91 117 | 1 0.01 99.92 123 | 1 0.01 99.93 129 | 1 0.01 99.94 196 | 2 0.02 99.96 211 | 2 0.02 99.98 239 | 1 0.01 99.99 385 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 7 Nov 2016