Frequencies for first 10,000 rows of cam variable in nhamcsopd2010 dataset : complementa | ry | alternative | medicine | Freq. Percent Cum. ------------+----------------------------------- no | 9,944 99.44 99.44 yes | 56 0.56 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016