Frequencies for first 10,000 rows of othdiag variable in nhamcsed1998 dataset : other | diagnostic | imaging | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,873 98.73 98.73 1 | 127 1.27 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016