Frequencies for first 10,000 rows of drg1ing4 variable in namcs2000 dataset : ingredient | code #4 for | medication | #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,952 99.52 99.52 53175 | 3 0.03 99.55 53620 | 1 0.01 99.56 54455 | 2 0.02 99.58 54465 | 3 0.03 99.61 54595 | 1 0.01 99.62 54713 | 4 0.04 99.66 54755 | 1 0.01 99.67 54923 | 1 0.01 99.68 54960 | 2 0.02 99.70 54995 | 4 0.04 99.74 55105 | 2 0.02 99.76 55180 | 1 0.01 99.77 55315 | 1 0.01 99.78 55755 | 16 0.16 99.94 56185 | 2 0.02 99.96 56193 | 1 0.01 99.97 56265 | 2 0.02 99.99 57170 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016