Frequencies for first 10,000 rows of drg3ing4 variable in namcs2005 dataset : ingredient | code #4 for | medication | #3 | Freq. Percent Cum. ------------+----------------------------------- | 9,969 99.69 99.69 54465 | 1 0.01 99.70 54713 | 1 0.01 99.71 55105 | 1 0.01 99.72 55755 | 11 0.11 99.83 55905 | 1 0.01 99.84 56185 | 1 0.01 99.85 56192 | 1 0.01 99.86 56193 | 1 0.01 99.87 56194 | 1 0.01 99.88 56285 | 1 0.01 99.89 70120 | 2 0.02 99.91 70260 | 2 0.02 99.93 70336 | 1 0.01 99.94 70358 | 1 0.01 99.95 70362 | 1 0.01 99.96 70407 | 1 0.01 99.97 70668 | 1 0.01 99.98 70673 | 1 0.01 99.99 70708 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016