Frequencies for first 10,000 rows of drg2ing4 variable in namcs1996 dataset : ingredient | code #4 for | medication | #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,908 99.08 99.08 51340 | 2 0.02 99.10 52465 | 1 0.01 99.11 53325 | 1 0.01 99.12 53640 | 4 0.04 99.16 54455 | 1 0.01 99.17 54465 | 1 0.01 99.18 54468 | 18 0.18 99.36 54595 | 2 0.02 99.38 54713 | 6 0.06 99.44 54960 | 7 0.07 99.51 54995 | 4 0.04 99.55 55105 | 2 0.02 99.57 55180 | 12 0.12 99.69 55355 | 1 0.01 99.70 55434 | 1 0.01 99.71 55710 | 5 0.05 99.76 55745 | 1 0.01 99.77 55755 | 15 0.15 99.92 55770 | 1 0.01 99.93 55915 | 1 0.01 99.94 56120 | 1 0.01 99.95 56193 | 1 0.01 99.96 56194 | 3 0.03 99.99 56265 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016