Frequencies for first 10,000 rows of drg2ing3 variable in nhamcsopd1999 dataset : ingredient | code #3 for | medication | #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,869 98.69 98.69 50637 | 2 0.02 98.71 50745 | 7 0.07 98.78 51670 | 2 0.02 98.80 52655 | 2 0.02 98.82 52785 | 1 0.01 98.83 52908 | 1 0.01 98.84 53175 | 3 0.03 98.87 53242 | 1 0.01 98.88 53325 | 2 0.02 98.90 53720 | 1 0.01 98.91 54325 | 1 0.01 98.92 54328 | 17 0.17 99.09 54395 | 2 0.02 99.11 54455 | 1 0.01 99.12 54465 | 27 0.27 99.39 54595 | 6 0.06 99.45 54755 | 2 0.02 99.47 54995 | 12 0.12 99.59 55085 | 1 0.01 99.60 55105 | 11 0.11 99.71 55130 | 12 0.12 99.83 55240 | 3 0.03 99.86 55715 | 2 0.02 99.88 56193 | 1 0.01 99.89 56445 | 6 0.06 99.95 57166 | 1 0.01 99.96 59629 | 1 0.01 99.97 59803 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016