Frequencies for first 10,000 rows of drg4ing1 variable in namcs1998 dataset : ingredient | code #1 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,902 99.02 99.02 50000 | 1 0.01 99.03 50005 | 18 0.18 99.21 50088 | 1 0.01 99.22 50145 | 1 0.01 99.23 50260 | 1 0.01 99.24 50410 | 1 0.01 99.25 50420 | 1 0.01 99.26 50498 | 1 0.01 99.27 50585 | 4 0.04 99.31 50685 | 1 0.01 99.32 50770 | 1 0.01 99.33 50785 | 2 0.02 99.35 50806 | 3 0.03 99.38 50869 | 1 0.01 99.39 50900 | 1 0.01 99.40 51130 | 1 0.01 99.41 51340 | 3 0.03 99.44 51345 | 1 0.01 99.45 51670 | 2 0.02 99.47 51890 | 1 0.01 99.48 51903 | 3 0.03 99.51 52035 | 1 0.01 99.52 52070 | 4 0.04 99.56 52075 | 4 0.04 99.60 52490 | 3 0.03 99.63 52645 | 16 0.16 99.79 52990 | 2 0.02 99.81 53255 | 6 0.06 99.87 53780 | 7 0.07 99.94 54160 | 1 0.01 99.95 54385 | 2 0.02 99.97 54960 | 1 0.01 99.98 56185 | 1 0.01 99.99 56192 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016