title: Effect of comorbidity on relative survival following hospitalisation for fall-related hip fracture in older people.
abstract: OBJECTIVE
  To assess the effect of comorbidity on relative survival after hip fracture.
  
  
  METHODS
  Relative survival analysis was undertaken in 16 838 fall-related hip fracture hospitalisations in New South Wales, Australia. Comorbidity was measured on the basis of additional diagnosis codes on the same hospital separation as the hip fracture using the Charlson Comorbidity Index (CCI). Interval-specific relative survival and relative excess risk of death were calculated.
  
  
  RESULTS
  Comorbidity was more frequently documented in men than women across the age groups. Survival decreased with increasing age and increasing comorbidity, but the relative impact of comorbidity was greater in the younger-old age group (65-74 years). The excess mortality in men was not accounted for by age or comorbidities.
  
  
  CONCLUSIONS
  This study demonstrates an association between increasing comorbidity and death particularly in the first 3 months post hip fracture. It also highlights a relative excess risk of death in men after hip fracture after adjusting for age and comorbidity.
authors: School of Mathematics and Applied Statistics, University of Wollongong, Sydney, New South Wales, Australia.
authors: Diane
authors: D
authors: Hindmarsh
authors: Ming
authors: M
authors: Loh
authors: Caroline F
authors: CF
authors: Finch
authors: Andrew
authors: A
authors: Hayen
authors: Jacqueline C T
authors: JC
authors: Close
mesh_terms: D000058:Accidental Falls / Q000401:mortality*; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015897:Comorbidity; D005260:Female; D006620:Hip Fractures / Q000175:diagnosis / Q000401:mortality* / Q000628:therapy; D017052:Hospital Mortality; D006760:Hospitalization; D006801:Humans; D008297:Male; D009517:New South Wales / Q000453:epidemiology; D012307:Risk Factors; D012737:Sex Factors; D016019:Survival Analysis; D013997:Time Factors
keywords: aged; comorbidity; fall; hip fracture; mortality