Frequencies for first 10,000 rows of boardhos variable in nhamcsed2013 dataset :

   If ED is |
 critically |
overloaded, |
        are |
admitted ED |
   patients |
       ever |
  'boarded' |
   in inpat |      Freq.     Percent        Cum.
------------+-----------------------------------
      Blank |         98        0.98        0.98
    Unknown |        850        8.50        9.48
        Yes |      3,028       30.28       39.76
         No |      6,024       60.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016