Frequencies for first 10,000 rows of othimage variable in nhamcsed2002 dataset : other | imaging | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,836 98.36 98.36 1 | 164 1.64 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016