Frequencies for first 10,000 rows of drg1ing4 variable in nhamcsopd2001 dataset : ingredient | code #4 for | medication | #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,693 96.93 96.93 51340 | 1 0.01 96.94 54713 | 2 0.02 96.96 54960 | 1 0.01 96.97 55180 | 1 0.01 96.98 55218 | 1 0.01 96.99 55405 | 2 0.02 97.01 55440 | 1 0.01 97.02 55490 | 1 0.01 97.03 55755 | 265 2.65 99.68 56185 | 3 0.03 99.71 56193 | 1 0.01 99.72 56194 | 1 0.01 99.73 56265 | 1 0.01 99.74 56345 | 1 0.01 99.75 70011 | 1 0.01 99.76 70032 | 2 0.02 99.78 70120 | 1 0.01 99.79 70260 | 21 0.21 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016