Frequencies for first 10,000 rows of drg2ing3 variable in nhamcsopd1993 dataset : ingredient | code #3 for | medication | #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,915 99.15 99.15 50637 | 1 0.01 99.16 50745 | 5 0.05 99.21 51670 | 1 0.01 99.22 52023 | 1 0.01 99.23 52490 | 2 0.02 99.25 52908 | 1 0.01 99.26 53175 | 2 0.02 99.28 53780 | 1 0.01 99.29 53995 | 2 0.02 99.31 54050 | 1 0.01 99.32 54330 | 1 0.01 99.33 54455 | 4 0.04 99.37 54465 | 18 0.18 99.55 54595 | 9 0.09 99.64 54990 | 1 0.01 99.65 54995 | 7 0.07 99.72 55105 | 1 0.01 99.73 55130 | 13 0.13 99.86 55160 | 2 0.02 99.88 55240 | 9 0.09 99.97 55610 | 1 0.01 99.98 57028 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016