Fig. 4.

Patient characteristics associated with inpatient mortality within 1 year after hip fracture surgery (multivariable logistic regression model adjusted for characteristics shown and age, Deyo Comorbidity Index, type of surgery, osteoporosis diagnosis present on admission, number of hospitals in hospital service area, number of beds at treating hospital, urban or rural type of treating hospital, teaching status of treating hospital, hospital volume of hip fracture cases, surgeon volume of hip fracture cases, and Area Deprivation Index). *P < 0.05; ^p < 0.01; †p < 0.001.