Frequencies for specialpay variable in drg2009 dataset :

 Post Acute |
    Special |
    Payment |
     Policy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        253       25.33       25.33
         No |        722       72.27       97.60
        Yes |         24        2.40      100.00
------------+-----------------------------------
      Total |        999      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016