Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsed1998 dataset : ingredient | code #1 for | drug #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,905 99.05 99.05 50000 | 1 0.01 99.06 50005 | 44 0.44 99.50 50088 | 1 0.01 99.51 50145 | 7 0.07 99.58 50260 | 2 0.02 99.60 50275 | 3 0.03 99.63 50283 | 1 0.01 99.64 50420 | 5 0.05 99.69 50498 | 1 0.01 99.70 50806 | 1 0.01 99.71 51130 | 1 0.01 99.72 51340 | 2 0.02 99.74 51675 | 3 0.03 99.77 51910 | 1 0.01 99.78 52023 | 1 0.01 99.79 52490 | 1 0.01 99.80 52645 | 2 0.02 99.82 52650 | 1 0.01 99.83 52655 | 2 0.02 99.85 53780 | 6 0.06 99.91 54385 | 1 0.01 99.92 55555 | 7 0.07 99.99 55835 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016