Frequencies for first 10,000 rows of othimage variable in nhamcsopd2010 dataset : other | imaging | Freq. Percent Cum. ------------+----------------------------------- no | 9,874 98.74 98.74 yes | 126 1.26 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016