Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsopd2001 dataset : ingredient | code #1 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,877 98.77 98.77 50000 | 1 0.01 98.78 50002 | 1 0.01 98.79 50005 | 16 0.16 98.95 50145 | 1 0.01 98.96 50260 | 3 0.03 98.99 50410 | 2 0.02 99.01 50418 | 2 0.02 99.03 50498 | 4 0.04 99.07 50550 | 1 0.01 99.08 50620 | 1 0.01 99.09 50770 | 1 0.01 99.10 50776 | 3 0.03 99.13 50785 | 1 0.01 99.14 50899 | 1 0.01 99.15 51308 | 1 0.01 99.16 51903 | 6 0.06 99.22 51910 | 2 0.02 99.24 52045 | 3 0.03 99.27 52075 | 4 0.04 99.31 52318 | 2 0.02 99.33 52354 | 4 0.04 99.37 52450 | 2 0.02 99.39 52490 | 1 0.01 99.40 52548 | 2 0.02 99.42 52645 | 8 0.08 99.50 52655 | 1 0.01 99.51 52790 | 1 0.01 99.52 52883 | 3 0.03 99.55 53255 | 3 0.03 99.58 53723 | 1 0.01 99.59 53780 | 13 0.13 99.72 53805 | 2 0.02 99.74 54180 | 1 0.01 99.75 54508 | 1 0.01 99.76 55555 | 13 0.13 99.89 55997 | 1 0.01 99.90 56185 | 1 0.01 99.91 56261 | 1 0.01 99.92 56345 | 2 0.02 99.94 57186 | 1 0.01 99.95 59606 | 2 0.02 99.97 70215 | 1 0.01 99.98 70402 | 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