Frequencies for first 10,000 rows of drg2ing1 variable in nhamcsed1997 dataset : ingredient | code #1 for | drug #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,464 94.64 94.64 50000 | 1 0.01 94.65 50005 | 215 2.15 96.80 50025 | 1 0.01 96.81 50035 | 1 0.01 96.82 50145 | 61 0.61 97.43 50260 | 27 0.27 97.70 50275 | 6 0.06 97.76 50290 | 1 0.01 97.77 50325 | 10 0.10 97.87 50410 | 5 0.05 97.92 50420 | 16 0.16 98.08 50450 | 3 0.03 98.11 50495 | 1 0.01 98.12 50755 | 1 0.01 98.13 50806 | 17 0.17 98.30 50899 | 1 0.01 98.31 50900 | 4 0.04 98.35 50933 | 1 0.01 98.36 51055 | 2 0.02 98.38 51130 | 5 0.05 98.43 51219 | 1 0.01 98.44 51340 | 9 0.09 98.53 51670 | 5 0.05 98.58 51675 | 12 0.12 98.70 51903 | 2 0.02 98.72 51910 | 13 0.13 98.85 52035 | 1 0.01 98.86 52040 | 1 0.01 98.87 52045 | 1 0.01 98.88 52065 | 8 0.08 98.96 52070 | 2 0.02 98.98 52490 | 11 0.11 99.09 52615 | 1 0.01 99.10 52645 | 9 0.09 99.19 52650 | 1 0.01 99.20 52655 | 9 0.09 99.29 52955 | 3 0.03 99.32 53325 | 2 0.02 99.34 53780 | 13 0.13 99.47 53895 | 10 0.10 99.57 53995 | 1 0.01 99.58 54508 | 2 0.02 99.60 54595 | 1 0.01 99.61 54655 | 1 0.01 99.62 54960 | 1 0.01 99.63 54965 | 1 0.01 99.64 55555 | 35 0.35 99.99 56185 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016