Patient Admission/*standards/trends
  
 
        
  
  
      
        
      
          Hubbard, Ruth E., Peel, Nancye M., Samanta, Mayukh, Gray, Leonard C., Fries, Brant E., Mitnitski, Arnold, Rockwood, Kenneth 2015. Derivation of a frailty index from the interRAI acute care instrument. BMC Geriatr.  15 () 27.