Frequencies for first 10,000 rows of drg4ing1 variable in namcs2001 dataset : ingredient | code #1 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,930 99.30 99.30 50000 | 1 0.01 99.31 50002 | 1 0.01 99.32 50005 | 14 0.14 99.46 50145 | 1 0.01 99.47 50260 | 1 0.01 99.48 50450 | 1 0.01 99.49 50498 | 1 0.01 99.50 50550 | 1 0.01 99.51 50570 | 1 0.01 99.52 50776 | 2 0.02 99.54 50899 | 1 0.01 99.55 51903 | 3 0.03 99.58 52045 | 1 0.01 99.59 52070 | 1 0.01 99.60 52075 | 3 0.03 99.63 52354 | 4 0.04 99.67 52450 | 4 0.04 99.71 52490 | 1 0.01 99.72 52645 | 6 0.06 99.78 52883 | 2 0.02 99.80 53255 | 1 0.01 99.81 53780 | 9 0.09 99.90 54960 | 2 0.02 99.92 56185 | 2 0.02 99.94 56193 | 3 0.03 99.97 70239 | 1 0.01 99.98 70257 | 1 0.01 99.99 80004 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016