Frequencies for specialpay variable in drg2010 dataset : Post Acute | Special | Payment | Policy | Freq. Percent Cum. ------------+----------------------------------- | 253 25.33 25.33 No | 719 71.97 97.30 Yes | 27 2.70 100.00 ------------+----------------------------------- Total | 999 100.00 by Jean Roth , jroth@nber.org , 22 Apr 2016