Frequencies for first 10,000 rows of drg4ing3 variable in nhamcsopd2000 dataset : ingredient | code #3 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,970 99.70 99.70 50745 | 5 0.05 99.75 53175 | 1 0.01 99.76 54328 | 2 0.02 99.78 54395 | 1 0.01 99.79 54465 | 2 0.02 99.81 54595 | 1 0.01 99.82 54755 | 1 0.01 99.83 54995 | 1 0.01 99.84 55130 | 9 0.09 99.93 55240 | 1 0.01 99.94 55610 | 1 0.01 99.95 55770 | 1 0.01 99.96 56445 | 2 0.02 99.98 59803 | 1 0.01 99.99 70020 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016