Frequencies for first 10,000 rows of drg1ing4 variable in namcs2002 dataset : Ingredient | code #4 for | medication | #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,930 99.30 99.30 54440 | 2 0.02 99.32 54713 | 2 0.02 99.34 55440 | 1 0.01 99.35 55520 | 1 0.01 99.36 55755 | 24 0.24 99.60 56192 | 1 0.01 99.61 56225 | 2 0.02 99.63 70244 | 2 0.02 99.65 70260 | 25 0.25 99.90 70336 | 1 0.01 99.91 70338 | 1 0.01 99.92 70440 | 3 0.03 99.95 70448 | 1 0.01 99.96 70457 | 1 0.01 99.97 70552 | 1 0.01 99.98 70668 | 1 0.01 99.99 70673 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016