Frequencies for first 10,000 rows of paynochg variable in namcs2013 dataset : Expected | source of | payment for | visit: No | Charge/Char | ity | Freq. Percent Cum. ------------+----------------------------------- No | 9,951 99.51 99.51 Yes | 49 0.49 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 27 Mar 2017