Frequencies for first 10,000 rows of anyimage variable in namcs2014 dataset : Any imaging | Freq. Percent Cum. ------------+----------------------------------- No | 8,536 85.36 85.36 Yes | 1,464 14.64 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 27 Mar 2017