Frequencies for first 10,000 rows of cancer variable in nhamcsopd2006 dataset : does | patient now | have - | cancer | Freq. Percent Cum. ------------+----------------------------------- No | 9,299 92.99 92.99 Yes | 701 7.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016