Frequencies for first 10,000 rows of drg4ing2 variable in nhamcsopd1992 dataset : Ingredient | code #2 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,928 99.28 99.28 50410 | 1 0.01 99.29 50728 | 4 0.04 99.33 51340 | 9 0.09 99.42 52490 | 2 0.02 99.44 52645 | 1 0.01 99.45 52650 | 2 0.02 99.47 52825 | 2 0.02 99.49 53175 | 5 0.05 99.54 53820 | 6 0.06 99.60 54320 | 1 0.01 99.61 54395 | 1 0.01 99.62 54455 | 1 0.01 99.63 54860 | 1 0.01 99.64 54890 | 2 0.02 99.66 54960 | 6 0.06 99.72 55080 | 1 0.01 99.73 55200 | 1 0.01 99.74 55315 | 1 0.01 99.75 55525 | 4 0.04 99.79 55590 | 2 0.02 99.81 55925 | 9 0.09 99.90 55997 | 7 0.07 99.97 56020 | 1 0.01 99.98 56194 | 1 0.01 99.99 57033 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016