Frequencies for first 10,000 rows of drug6cl2 variable in namcs2004 dataset : ndc code #2 | for | medication | #6 | Freq. Percent Cum. ------------+----------------------------------- | 9,914 99.14 99.14 0120 | 1 0.01 99.15 0506 | 1 0.01 99.16 0507 | 6 0.06 99.22 0510 | 1 0.01 99.23 0512 | 8 0.08 99.31 0513 | 9 0.09 99.40 0875 | 1 0.01 99.41 0913 | 1 0.01 99.42 1265 | 1 0.01 99.43 1275 | 1 0.01 99.44 1671 | 2 0.02 99.46 1724 | 35 0.35 99.81 1727 | 9 0.09 99.90 1728 | 5 0.05 99.95 1944 | 1 0.01 99.96 1947 | 2 0.02 99.98 2095 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016