Frequencies for first 10,000 rows of drg4ing2 variable in nhamcsed1998 dataset : ingredient | code #2 for | drug #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,911 99.11 99.11 50410 | 1 0.01 99.12 51064 | 1 0.01 99.13 51340 | 5 0.05 99.18 52023 | 1 0.01 99.19 52490 | 1 0.01 99.20 52650 | 25 0.25 99.45 52720 | 5 0.05 99.50 52730 | 1 0.01 99.51 52883 | 1 0.01 99.52 53118 | 1 0.01 99.53 53175 | 7 0.07 99.60 53720 | 1 0.01 99.61 53895 | 2 0.02 99.63 54094 | 9 0.09 99.72 54465 | 1 0.01 99.73 54590 | 1 0.01 99.74 54860 | 1 0.01 99.75 54890 | 4 0.04 99.79 54960 | 2 0.02 99.81 55115 | 2 0.02 99.83 55521 | 3 0.03 99.86 55710 | 1 0.01 99.87 55925 | 1 0.01 99.88 55997 | 7 0.07 99.95 56355 | 1 0.01 99.96 57033 | 3 0.03 99.99 57136 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016