Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsed1993 dataset : ingredient | code #1 for | drug #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,917 99.17 99.17 50000 | 1 0.01 99.18 50005 | 32 0.32 99.50 50145 | 12 0.12 99.62 50260 | 3 0.03 99.65 50325 | 1 0.01 99.66 50410 | 1 0.01 99.67 50420 | 2 0.02 99.69 50440 | 1 0.01 99.70 50899 | 1 0.01 99.71 51340 | 2 0.02 99.73 51635 | 1 0.01 99.74 51675 | 1 0.01 99.75 51910 | 1 0.01 99.76 52035 | 1 0.01 99.77 52040 | 1 0.01 99.78 52065 | 1 0.01 99.79 52490 | 4 0.04 99.83 52645 | 3 0.03 99.86 52655 | 1 0.01 99.87 53325 | 1 0.01 99.88 53780 | 3 0.03 99.91 53895 | 1 0.01 99.92 54960 | 1 0.01 99.93 55555 | 6 0.06 99.99 55835 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016