Frequencies for first 10,000 rows of drg4ing1 variable in nhamcsopd1993 dataset : ingredient | code #1 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,907 99.07 99.07 50000 | 2 0.02 99.09 50005 | 16 0.16 99.25 50145 | 8 0.08 99.33 50182 | 1 0.01 99.34 50185 | 1 0.01 99.35 50410 | 2 0.02 99.37 50420 | 1 0.01 99.38 50440 | 1 0.01 99.39 50585 | 1 0.01 99.40 50745 | 1 0.01 99.41 50770 | 1 0.01 99.42 50785 | 1 0.01 99.43 50899 | 1 0.01 99.44 50900 | 1 0.01 99.45 50933 | 1 0.01 99.46 51130 | 1 0.01 99.47 51235 | 2 0.02 99.49 51335 | 1 0.01 99.50 51340 | 1 0.01 99.51 51635 | 1 0.01 99.52 51675 | 1 0.01 99.53 51903 | 2 0.02 99.55 51935 | 1 0.01 99.56 52070 | 1 0.01 99.57 52318 | 2 0.02 99.59 52408 | 1 0.01 99.60 52645 | 6 0.06 99.66 52655 | 3 0.03 99.69 53255 | 5 0.05 99.74 53780 | 16 0.16 99.90 54960 | 2 0.02 99.92 55555 | 7 0.07 99.99 55755 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016