Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsopd1997 dataset : ingredient | code #1 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,912 99.12 99.12 50005 | 14 0.14 99.26 50145 | 4 0.04 99.30 50305 | 1 0.01 99.31 50410 | 1 0.01 99.32 50440 | 1 0.01 99.33 50498 | 2 0.02 99.35 50770 | 1 0.01 99.36 50811 | 1 0.01 99.37 50900 | 1 0.01 99.38 51200 | 2 0.02 99.40 51382 | 2 0.02 99.42 51670 | 2 0.02 99.44 51903 | 2 0.02 99.46 51910 | 2 0.02 99.48 52045 | 7 0.07 99.55 52075 | 2 0.02 99.57 52430 | 1 0.01 99.58 52490 | 6 0.06 99.64 52645 | 6 0.06 99.70 52990 | 3 0.03 99.73 53255 | 6 0.06 99.79 53723 | 1 0.01 99.80 53780 | 5 0.05 99.85 54960 | 1 0.01 99.86 54990 | 2 0.02 99.88 55555 | 10 0.10 99.98 56193 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016