Frequencies for first 10,000 rows of drug3cl2 variable in namcs2005 dataset : ndc code #2 | for | medication | #3 | Freq. Percent Cum. ------------+----------------------------------- | 9,598 95.98 95.98 0506 | 1 0.01 95.99 0507 | 18 0.18 96.17 0508 | 1 0.01 96.18 0510 | 16 0.16 96.34 0512 | 27 0.27 96.61 0513 | 17 0.17 96.78 0630 | 1 0.01 96.79 0874 | 1 0.01 96.80 0875 | 2 0.02 96.82 0876 | 1 0.01 96.83 0913 | 5 0.05 96.88 0914 | 1 0.01 96.89 1034 | 2 0.02 96.91 1036 | 3 0.03 96.94 1040 | 4 0.04 96.98 1180 | 6 0.06 97.04 1265 | 4 0.04 97.08 1268 | 3 0.03 97.11 1271 | 1 0.01 97.12 1275 | 4 0.04 97.16 1373 | 10 0.10 97.26 1400 | 2 0.02 97.28 1569 | 1 0.01 97.29 1671 | 16 0.16 97.45 1723 | 2 0.02 97.47 1724 | 97 0.97 98.44 1727 | 50 0.50 98.94 1728 | 52 0.52 99.46 1864 | 1 0.01 99.47 1941 | 1 0.01 99.48 1943 | 20 0.20 99.68 1944 | 17 0.17 99.85 1945 | 1 0.01 99.86 1947 | 13 0.13 99.99 2095 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016