Frequencies for first 10,000 rows of paymcare variable in namcs2005 dataset : expected | source of | payment - | medicare | Freq. Percent Cum. ------------+----------------------------------- 0 | 8,097 80.97 80.97 1 | 1,903 19.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016