Frequencies for first 10,000 rows of papconv variable in nhamcsopd2006 dataset : pap test - | conventiona | l | Freq. Percent Cum. ------------+----------------------------------- No | 9,918 99.18 99.18 Yes | 82 0.82 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016