Frequencies for first 10,000 rows of drg1ing4 variable in namcs2001 dataset : ingredient | code #4 for | medication | #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,904 99.04 99.04 51340 | 1 0.01 99.05 54238 | 1 0.01 99.06 54440 | 2 0.02 99.08 54455 | 3 0.03 99.11 54713 | 1 0.01 99.12 55105 | 2 0.02 99.14 55160 | 1 0.01 99.15 55405 | 2 0.02 99.17 55755 | 45 0.45 99.62 55915 | 1 0.01 99.63 56192 | 1 0.01 99.64 56193 | 1 0.01 99.65 56194 | 2 0.02 99.67 70011 | 2 0.02 99.69 70120 | 3 0.03 99.72 70146 | 1 0.01 99.73 70244 | 1 0.01 99.74 70260 | 26 0.26 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016