Frequencies for first 10,000 rows of drug5cl2 variable in namcs2002 dataset : NDC code #2 | for | medication | #5 | Freq. Percent Cum. ------------+----------------------------------- | 9,919 99.19 99.19 0507 | 5 0.05 99.24 0510 | 3 0.03 99.27 0512 | 9 0.09 99.36 0513 | 8 0.08 99.44 0878 | 1 0.01 99.45 0913 | 2 0.02 99.47 1040 | 2 0.02 99.49 1373 | 4 0.04 99.53 1479 | 1 0.01 99.54 1568 | 1 0.01 99.55 1671 | 4 0.04 99.59 1723 | 1 0.01 99.60 1724 | 28 0.28 99.88 1727 | 4 0.04 99.92 1728 | 4 0.04 99.96 1860 | 1 0.01 99.97 1943 | 1 0.01 99.98 1944 | 1 0.01 99.99 1947 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016