Frequencies for first 10,000 rows of drug5cl2 variable in nhamcsopd2002 dataset : drug class | #2 for | medication | #5 | Freq. Percent Cum. ------------+----------------------------------- | 9,919 99.19 99.19 0120 | 1 0.01 99.20 0507 | 4 0.04 99.24 0512 | 4 0.04 99.28 0513 | 7 0.07 99.35 0630 | 1 0.01 99.36 0874 | 1 0.01 99.37 0875 | 1 0.01 99.38 0878 | 1 0.01 99.39 0913 | 2 0.02 99.41 0916 | 2 0.02 99.43 1265 | 1 0.01 99.44 1274 | 1 0.01 99.45 1275 | 3 0.03 99.48 1373 | 3 0.03 99.51 1671 | 1 0.01 99.52 1720 | 1 0.01 99.53 1722 | 1 0.01 99.54 1724 | 20 0.20 99.74 1727 | 5 0.05 99.79 1728 | 16 0.16 99.95 1940 | 1 0.01 99.96 1944 | 3 0.03 99.99 1947 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016