Frequencies for first 10,000 rows of drg4ing3 variable in nhamcsopd1995 dataset : ingredient | code #3 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,974 99.74 99.74 50745 | 4 0.04 99.78 52908 | 1 0.01 99.79 52990 | 1 0.01 99.80 53325 | 1 0.01 99.81 53720 | 1 0.01 99.82 53915 | 2 0.02 99.84 54330 | 1 0.01 99.85 54465 | 3 0.03 99.88 54595 | 2 0.02 99.90 54923 | 1 0.01 99.91 54990 | 1 0.01 99.92 54995 | 1 0.01 99.93 55105 | 3 0.03 99.96 55130 | 1 0.01 99.97 55240 | 1 0.01 99.98 55715 | 1 0.01 99.99 55745 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016