Frequencies for first 10,000 rows of drg2ing3 variable in nhamcsed2000 dataset : ingredient | code #3 for | drug #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,918 99.18 99.18 50745 | 3 0.03 99.21 52190 | 1 0.01 99.22 52908 | 1 0.01 99.23 53175 | 4 0.04 99.27 54193 | 1 0.01 99.28 54395 | 16 0.16 99.44 54465 | 5 0.05 99.49 54595 | 12 0.12 99.61 54713 | 1 0.01 99.62 54749 | 1 0.01 99.63 54755 | 1 0.01 99.64 54960 | 7 0.07 99.71 54990 | 1 0.01 99.72 54995 | 3 0.03 99.75 55105 | 3 0.03 99.78 55240 | 9 0.09 99.87 55280 | 1 0.01 99.88 55715 | 1 0.01 99.89 55745 | 1 0.01 99.90 55755 | 1 0.01 99.91 56020 | 1 0.01 99.92 56585 | 3 0.03 99.95 59803 | 1 0.01 99.96 70011 | 4 0.04 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016