Frequencies for first 10,000 rows of drug2cl2 variable in namcs2004 dataset : ndc code #2 | for | medication | #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,633 96.33 96.33 0120 | 3 0.03 96.36 0503 | 2 0.02 96.38 0507 | 19 0.19 96.57 0510 | 7 0.07 96.64 0512 | 26 0.26 96.90 0513 | 22 0.22 97.12 0514 | 1 0.01 97.13 0626 | 1 0.01 97.14 0630 | 2 0.02 97.16 0876 | 4 0.04 97.20 0913 | 5 0.05 97.25 0914 | 1 0.01 97.26 0916 | 1 0.01 97.27 1034 | 1 0.01 97.28 1036 | 2 0.02 97.30 1040 | 1 0.01 97.31 1180 | 1 0.01 97.32 1183 | 1 0.01 97.33 1200 | 1 0.01 97.34 1264 | 1 0.01 97.35 1265 | 10 0.10 97.45 1268 | 2 0.02 97.47 1270 | 2 0.02 97.49 1271 | 1 0.01 97.50 1274 | 1 0.01 97.51 1275 | 6 0.06 97.57 1373 | 9 0.09 97.66 1480 | 3 0.03 97.69 1567 | 1 0.01 97.70 1568 | 6 0.06 97.76 1569 | 5 0.05 97.81 1670 | 1 0.01 97.82 1671 | 24 0.24 98.06 1722 | 1 0.01 98.07 1723 | 2 0.02 98.09 1724 | 72 0.72 98.81 1727 | 34 0.34 99.15 1728 | 30 0.30 99.45 1940 | 2 0.02 99.47 1943 | 23 0.23 99.70 1944 | 16 0.16 99.86 1945 | 1 0.01 99.87 1947 | 11 0.11 99.98 2087 | 1 0.01 99.99 2095 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016