Frequencies for first 10,000 rows of drug1cl2 variable in namcs2002 dataset : NDC code #2 | for | medication | #1 | Freq. Percent Cum. ------------+----------------------------------- | 9,544 95.44 95.44 0120 | 1 0.01 95.45 0353 | 7 0.07 95.52 0503 | 1 0.01 95.53 0507 | 7 0.07 95.60 0510 | 9 0.09 95.69 0512 | 40 0.40 96.09 0513 | 49 0.49 96.58 0630 | 5 0.05 96.63 0632 | 3 0.03 96.66 0875 | 2 0.02 96.68 0876 | 1 0.01 96.69 0877 | 2 0.02 96.71 0878 | 1 0.01 96.72 0913 | 4 0.04 96.76 0916 | 4 0.04 96.80 1034 | 3 0.03 96.83 1040 | 3 0.03 96.86 1265 | 11 0.11 96.97 1268 | 20 0.20 97.17 1275 | 19 0.19 97.36 1373 | 16 0.16 97.52 1479 | 1 0.01 97.53 1480 | 7 0.07 97.60 1566 | 1 0.01 97.61 1568 | 2 0.02 97.63 1569 | 2 0.02 97.65 1671 | 15 0.15 97.80 1722 | 5 0.05 97.85 1723 | 3 0.03 97.88 1724 | 56 0.56 98.44 1727 | 43 0.43 98.87 1728 | 51 0.51 99.38 1860 | 2 0.02 99.40 1941 | 5 0.05 99.45 1943 | 20 0.20 99.65 1944 | 12 0.12 99.77 1945 | 1 0.01 99.78 1947 | 18 0.18 99.96 2087 | 3 0.03 99.99 2100 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016