Frequencies for first 10,000 rows of drug6cl2 variable in namcs2005 dataset : ndc code #2 | for | medication | #6 | Freq. Percent Cum. ------------+----------------------------------- | 9,855 98.55 98.55 0504 | 1 0.01 98.56 0506 | 1 0.01 98.57 0507 | 6 0.06 98.63 0510 | 2 0.02 98.65 0512 | 19 0.19 98.84 0513 | 6 0.06 98.90 0630 | 1 0.01 98.91 0875 | 1 0.01 98.92 0913 | 3 0.03 98.95 1034 | 1 0.01 98.96 1036 | 1 0.01 98.97 1040 | 2 0.02 98.99 1265 | 1 0.01 99.00 1271 | 1 0.01 99.01 1373 | 1 0.01 99.02 1671 | 7 0.07 99.09 1723 | 2 0.02 99.11 1724 | 50 0.50 99.61 1727 | 19 0.19 99.80 1728 | 5 0.05 99.85 1943 | 2 0.02 99.87 1944 | 3 0.03 99.90 1947 | 10 0.10 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016