Frequencies for first 10,000 rows of drg1ing4 variable in nhamcsopd2002 dataset : ingredient | code #4 for | medication | #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,813 98.13 98.13 53175 | 1 0.01 98.14 54440 | 1 0.01 98.15 54713 | 3 0.03 98.18 55105 | 6 0.06 98.24 55440 | 2 0.02 98.26 55755 | 150 1.50 99.76 56185 | 1 0.01 99.77 56193 | 1 0.01 99.78 56265 | 3 0.03 99.81 70231 | 1 0.01 99.82 70244 | 1 0.01 99.83 70260 | 11 0.11 99.94 70336 | 1 0.01 99.95 70439 | 1 0.01 99.96 70440 | 1 0.01 99.97 70668 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016