Frequencies for first 10,000 rows of drg1ing3 variable in nhamcsed2002 dataset : ingredient | code #3 for | drug #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,912 99.12 99.12 50745 | 9 0.09 99.21 53175 | 18 0.18 99.39 54330 | 1 0.01 99.40 54655 | 1 0.01 99.41 54960 | 2 0.02 99.43 55105 | 11 0.11 99.54 55315 | 1 0.01 99.55 55348 | 1 0.01 99.56 55480 | 3 0.03 99.59 55645 | 1 0.01 99.60 55710 | 1 0.01 99.61 55715 | 5 0.05 99.66 55755 | 2 0.02 99.68 56192 | 1 0.01 99.69 70120 | 4 0.04 99.73 70335 | 1 0.01 99.74 70338 | 3 0.03 99.77 70358 | 1 0.01 99.78 70362 | 12 0.12 99.90 70404 | 1 0.01 99.91 70407 | 2 0.02 99.93 70443 | 1 0.01 99.94 70446 | 2 0.02 99.96 70447 | 1 0.01 99.97 70633 | 1 0.01 99.98 70667 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016