Frequencies for first 10,000 rows of drg1ing3 variable in nhamcsed1998 dataset : ingredient | code #3 for | drug #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,893 98.93 98.93 50637 | 1 0.01 98.94 50745 | 11 0.11 99.05 51670 | 2 0.02 99.07 52908 | 2 0.02 99.09 52990 | 1 0.01 99.10 53175 | 15 0.15 99.25 54050 | 1 0.01 99.26 54330 | 1 0.01 99.27 54395 | 15 0.15 99.42 54465 | 12 0.12 99.54 54595 | 14 0.14 99.68 54755 | 2 0.02 99.70 54960 | 1 0.01 99.71 54990 | 1 0.01 99.72 54995 | 4 0.04 99.76 55080 | 1 0.01 99.77 55105 | 3 0.03 99.80 55240 | 16 0.16 99.96 55280 | 1 0.01 99.97 55715 | 1 0.01 99.98 57122 | 1 0.01 99.99 57166 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016