Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsopd1996 dataset : ingredient | code #1 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,886 98.86 98.86 50000 | 3 0.03 98.89 50005 | 22 0.22 99.11 50145 | 2 0.02 99.13 50260 | 3 0.03 99.16 50410 | 1 0.01 99.17 50460 | 1 0.01 99.18 50530 | 1 0.01 99.19 50770 | 1 0.01 99.20 50806 | 1 0.01 99.21 50811 | 1 0.01 99.22 50899 | 1 0.01 99.23 50900 | 1 0.01 99.24 50933 | 2 0.02 99.26 51020 | 1 0.01 99.27 51130 | 4 0.04 99.31 51340 | 2 0.02 99.33 51635 | 2 0.02 99.35 51670 | 1 0.01 99.36 51903 | 1 0.01 99.37 51910 | 1 0.01 99.38 52035 | 1 0.01 99.39 52045 | 4 0.04 99.43 52070 | 1 0.01 99.44 52318 | 1 0.01 99.45 52490 | 3 0.03 99.48 52645 | 10 0.10 99.58 52655 | 2 0.02 99.60 52990 | 5 0.05 99.65 53255 | 3 0.03 99.68 53780 | 18 0.18 99.86 53915 | 1 0.01 99.87 54385 | 1 0.01 99.88 55555 | 11 0.11 99.99 56193 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016