Frequencies for first 10,000 rows of drg4ing2 variable in namcs2001 dataset : ingredient | code #2 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,939 99.39 99.39 50410 | 1 0.01 99.40 51255 | 1 0.01 99.41 51305 | 1 0.01 99.42 51340 | 1 0.01 99.43 51910 | 3 0.03 99.46 52080 | 1 0.01 99.47 52650 | 6 0.06 99.53 53050 | 1 0.01 99.54 53280 | 2 0.02 99.56 53670 | 1 0.01 99.57 53754 | 4 0.04 99.61 53820 | 1 0.01 99.62 53965 | 1 0.01 99.63 54094 | 3 0.03 99.66 54960 | 1 0.01 99.67 54990 | 1 0.01 99.68 55925 | 6 0.06 99.74 56193 | 2 0.02 99.76 56194 | 2 0.02 99.78 56195 | 3 0.03 99.81 56355 | 1 0.01 99.82 56490 | 1 0.01 99.83 57130 | 4 0.04 99.87 70011 | 1 0.01 99.88 70027 | 1 0.01 99.89 70150 | 4 0.04 99.93 70217 | 1 0.01 99.94 70256 | 1 0.01 99.95 70258 | 1 0.01 99.96 70341 | 1 0.01 99.97 70359 | 2 0.02 99.99 91011 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016