Frequencies for first 10,000 rows of paymcaid variable in nhamcsopd2010 dataset : expected | source(s) | of payment | for this | visit: | medicaid | Freq. Percent Cum. ------------+----------------------------------- no | 6,662 66.62 66.62 yes | 3,338 33.38 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016