predictors of length of hospital stay in elderly hip fracture patients the purpose of this study was to assess the relationship between prefracture characteristics and length of stay los at the authors institution three hundred eightynine consecutive elderly hip fracture patients preoperative characteristics comorbidities fracture type and surgical and hospital course were retrospectively reviewed multiple regression was used to determine which subset of potential independent variables would be good predictors of los predictors of increased los included cerebral vascular disease 128 days p 0352 chronic renal insufficiency 117 days p 0363 and american society of anesthesiologists asa score 127 days per asa class p 0005 for each increase in age by 1 year los decreased by a mean of 0085 days p 0041 fracture type prefracture mobility or other examined comorbidities were found not to be significant predictors of los identifying highrisk patients in the preoperative period and minimizing certain perioperative events will be important to optimize care of patients who fracture their hip and to minimize future costs