Frequencies for first 10,000 rows of drug2cl2 variable in namcs2003 dataset : ndc code #2 | for | medication | #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,638 96.38 96.38 0120 | 3 0.03 96.41 0353 | 1 0.01 96.42 0507 | 17 0.17 96.59 0510 | 11 0.11 96.70 0512 | 26 0.26 96.96 0513 | 18 0.18 97.14 0632 | 1 0.01 97.15 0874 | 1 0.01 97.16 0875 | 4 0.04 97.20 0877 | 1 0.01 97.21 0913 | 2 0.02 97.23 0916 | 2 0.02 97.25 1034 | 3 0.03 97.28 1040 | 2 0.02 97.30 1180 | 2 0.02 97.32 1200 | 3 0.03 97.35 1265 | 7 0.07 97.42 1268 | 2 0.02 97.44 1270 | 1 0.01 97.45 1275 | 10 0.10 97.55 1373 | 18 0.18 97.73 1568 | 8 0.08 97.81 1569 | 6 0.06 97.87 1671 | 12 0.12 97.99 1722 | 4 0.04 98.03 1723 | 3 0.03 98.06 1724 | 71 0.71 98.77 1727 | 39 0.39 99.16 1728 | 31 0.31 99.47 1860 | 1 0.01 99.48 1941 | 2 0.02 99.50 1943 | 17 0.17 99.67 1944 | 17 0.17 99.84 1947 | 15 0.15 99.99 2087 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016