Frequencies for first 10,000 rows of drg2ing1 variable in nhamcsed1992 dataset : Ingredient | code #1 for | drug #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,553 95.53 95.53 50000 | 6 0.06 95.59 50005 | 146 1.46 97.05 50145 | 60 0.60 97.65 50230 | 1 0.01 97.66 50260 | 21 0.21 97.87 50275 | 3 0.03 97.90 50325 | 4 0.04 97.94 50410 | 3 0.03 97.97 50420 | 19 0.19 98.16 50450 | 4 0.04 98.20 50460 | 1 0.01 98.21 50585 | 2 0.02 98.23 50690 | 1 0.01 98.24 50755 | 1 0.01 98.25 50806 | 8 0.08 98.33 50900 | 3 0.03 98.36 50933 | 1 0.01 98.37 51130 | 12 0.12 98.49 51340 | 9 0.09 98.58 51670 | 6 0.06 98.64 51675 | 10 0.10 98.74 51903 | 4 0.04 98.78 51910 | 8 0.08 98.86 52065 | 6 0.06 98.92 52490 | 18 0.18 99.10 52615 | 2 0.02 99.12 52645 | 5 0.05 99.17 52655 | 21 0.21 99.38 52955 | 2 0.02 99.40 53780 | 7 0.07 99.47 53895 | 17 0.17 99.64 54332 | 1 0.01 99.65 54385 | 1 0.01 99.66 54713 | 1 0.01 99.67 54960 | 5 0.05 99.72 55555 | 28 0.28 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016