Frequencies for first 10,000 rows of drug5cl2 variable in namcs2003 dataset : ndc code #2 | for | medication | #5 | Freq. Percent Cum. ------------+----------------------------------- | 9,882 98.82 98.82 0120 | 1 0.01 98.83 0507 | 2 0.02 98.85 0508 | 3 0.03 98.88 0512 | 12 0.12 99.00 0513 | 9 0.09 99.09 0913 | 2 0.02 99.11 1265 | 1 0.01 99.12 1270 | 1 0.01 99.13 1373 | 4 0.04 99.17 1480 | 1 0.01 99.18 1569 | 2 0.02 99.20 1671 | 3 0.03 99.23 1722 | 1 0.01 99.24 1724 | 41 0.41 99.65 1727 | 19 0.19 99.84 1728 | 9 0.09 99.93 1943 | 4 0.04 99.97 1944 | 2 0.02 99.99 1947 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016