Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsopd1999 dataset : ingredient | code #1 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,888 98.88 98.88 50000 | 1 0.01 98.89 50005 | 14 0.14 99.03 50088 | 1 0.01 99.04 50145 | 1 0.01 99.05 50260 | 2 0.02 99.07 50410 | 1 0.01 99.08 50420 | 1 0.01 99.09 50498 | 1 0.01 99.10 50515 | 1 0.01 99.11 50530 | 1 0.01 99.12 50585 | 1 0.01 99.13 50770 | 5 0.05 99.18 50900 | 1 0.01 99.19 51130 | 4 0.04 99.23 51670 | 1 0.01 99.24 51890 | 2 0.02 99.26 51903 | 1 0.01 99.27 51910 | 1 0.01 99.28 52035 | 1 0.01 99.29 52045 | 2 0.02 99.31 52070 | 2 0.02 99.33 52075 | 8 0.08 99.41 52318 | 2 0.02 99.43 52485 | 1 0.01 99.44 52490 | 3 0.03 99.47 52645 | 6 0.06 99.53 52650 | 1 0.01 99.54 52830 | 1 0.01 99.55 53255 | 6 0.06 99.61 53780 | 17 0.17 99.78 53965 | 1 0.01 99.79 54160 | 1 0.01 99.80 54180 | 1 0.01 99.81 54385 | 1 0.01 99.82 54655 | 2 0.02 99.84 54960 | 1 0.01 99.85 55555 | 5 0.05 99.90 56185 | 1 0.01 99.91 56193 | 1 0.01 99.92 56261 | 3 0.03 99.95 56345 | 2 0.02 99.97 80004 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016