Frequencies for first 10,000 rows of drug4cl2 variable in nhamcsopd2002 dataset : drug class | #2 for | medication | #4 | Freq. Percent Cum. ------------+----------------------------------- | 9,899 98.99 98.99 0507 | 6 0.06 99.05 0512 | 8 0.08 99.13 0513 | 6 0.06 99.19 0875 | 3 0.03 99.22 0913 | 1 0.01 99.23 0915 | 5 0.05 99.28 0916 | 2 0.02 99.30 1265 | 1 0.01 99.31 1275 | 3 0.03 99.34 1373 | 1 0.01 99.35 1567 | 1 0.01 99.36 1569 | 1 0.01 99.37 1671 | 3 0.03 99.40 1722 | 1 0.01 99.41 1724 | 34 0.34 99.75 1727 | 3 0.03 99.78 1728 | 18 0.18 99.96 1940 | 2 0.02 99.98 1943 | 1 0.01 99.99 1947 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016