Frequencies for first 10,000 rows of drug5cl2 variable in namcs2004 dataset : ndc code #2 | for | medication | #5 | Freq. Percent Cum. ------------+----------------------------------- | 9,901 99.01 99.01 0120 | 3 0.03 99.04 0358 | 1 0.01 99.05 0506 | 1 0.01 99.06 0507 | 6 0.06 99.12 0510 | 2 0.02 99.14 0512 | 7 0.07 99.21 0513 | 6 0.06 99.27 0875 | 1 0.01 99.28 0913 | 5 0.05 99.33 0916 | 1 0.01 99.34 1180 | 1 0.01 99.35 1265 | 1 0.01 99.36 1275 | 2 0.02 99.38 1373 | 3 0.03 99.41 1671 | 1 0.01 99.42 1724 | 39 0.39 99.81 1727 | 7 0.07 99.88 1728 | 6 0.06 99.94 1860 | 1 0.01 99.95 1944 | 1 0.01 99.96 1947 | 4 0.04 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016