Osteoporosis International

, Volume 23, Issue 6, pp 1807–1811

Excess mortality after hip fracture among elderly women in Norway

The HUNT study
  • A. B. Grønskag
  • P. Romundstad
  • S. Forsmo
  • A. Langhammer
  • B. Schei
Original Article

DOI: 10.1007/s00198-011-1811-y

Cite this article as:
Grønskag, A.B., Romundstad, P., Forsmo, S. et al. Osteoporos Int (2012) 23: 1807. doi:10.1007/s00198-011-1811-y

Abstract

Summary

We wanted to study mortality after hip fractures among elderly women in Norway. We found that excess mortality was highest short time after hip fracture, but persisted for several years after the fracture. The excess mortality was not explained by pre-fracture medical conditions.

Introduction

The purpose of the present study was to investigate short and long term mortality after hip fracture, and to evaluate how comorbidity, bone mineral density, and lifestyle factors affect the survival after hip fractures.

Methods

The study cohort emerges from a population-based health survey in the county of Nord-Trøndelag, Norway. Women aged 65 or more at participation at the health survey who sustained a hip fracture after attending the health survey are cases in this study (n = 781). A comparison cohort was constructed based on participants at HUNT 2 with no history of hip fractures (n = 3, 142). Kaplan–Meier survival curves were used to evaluate crude survival, and Cox regression analyses were used to study age-adjusted hazard ratios for mortality and for multivariable analyses involving relevant covariates.

Results

Mean length of follow-up after fracture was 2.8 years. Within the first 3 months of follow-up, 78 (10.0%) of the hip fracture patients died, compared to only 39 (1.7%) in the control group. HR for mortality 3 months after hip fracture was 6.5 (95% CI 4.2–9.6). For the entire follow-up period women who sustained a hip fracture had an HR for mortality of 1.9 (95% CI 1.6–2.3), compared with women without a hip fracture.

Conclusions

We found that elderly women who sustained a hip fracture had increased mortality risk. The excess mortality was highest short time after the fracture, but persisted for several years after the fracture, and was not explained by pre-fracture medical conditions.

Keywords

Elderly Epidemiology Hip fracture Mortality Women 

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2011

Authors and Affiliations

  • A. B. Grønskag
    • 1
    • 2
  • P. Romundstad
    • 1
  • S. Forsmo
    • 1
  • A. Langhammer
    • 3
  • B. Schei
    • 1
    • 4
  1. 1.Department of Public Health and General PracticeNorwegian University of Science and TechnologyTrondheimNorway
  2. 2.Department of RadiologyLevanger HospitalLevangerNorway
  3. 3.HUNT research centre, Faculty of MedicineNorwegian University of Science and TechnologyLevangerNorway
  4. 4.Department of Obstetrics and GynecologySt. Olavs HospitalTrondheimNorway

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