Frequencies for first 10,000 rows of payoth variable in nhamcsed2010 dataset : Expected | source of | payment: | Other | Freq. Percent Cum. ------------+----------------------------------- no | 9,640 96.40 96.40 yes | 360 3.60 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016