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Author (up) Hoff, M.; Meyer, H.E.; Skurtveit, S.; Langhammer, A.; Sogaard, A.J.; Syversen, U.; Dhainaut, A.; Skovlund, E.; Abrahamsen, B.; Schei, B. url  doi
  Title Validation of FRAX and the impact of self-reported falls among elderly in a general population: the HUNT study, Norway Type Journal Article
  Year 2017 Publication Osteoporosis International : a Journal Established as Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA Abbreviated Journal Osteoporos Int  
  Volume 28 Issue 10 Pages 2935-2944  
  Keywords Fracture risk assessment; General population studies; Hunt; Osteoporosis  
  Abstract Fracture Risk Assessment Tool (FRAX) without bone mineral density (BMD) for hip fracture prediction was validated in a Norwegian population 50-90 years. Fracture risk increased with higher FRAX score, and the observed number of hip fractures agreed well with the predicted number, except for the youngest and oldest men. Self-reported fall was an independent risk factor for fracture in women. INTRODUCTION: The primary aim was to validate FRAX without BMD for hip fracture prediction in a Norwegian population of men and women 50-90 years. Secondary, to study whether information of falls could improve prediction of fractures in the subgroup aged 70-90 years. METHODS: Data were obtained from the third survey of the Nord-Trondelag Health Study (HUNT3), the fracture registry in Nord-Trondelag, and the Norwegian Prescription Database (NorPD), including 15,432 women and 13,585 men. FRAX hip without BMD was calculated, and hip fractures were registered for a median follow-up of 5.2 years. The number of estimated and observed fractures was assessed, ROC curves with area under the curve (AUC), and Cox regression analyses. For the group aged 70-90 years, self-reported falls the last year before HUNT3 were included in the Cox regression model. RESULTS: The risk of fracture increased with higher FRAX score. When FRAX groups were categorized in a 10-year percentage risk for hip fracture as follows, <4, 4-7.9, 8-11.9, and >/=12%, the hazard ratio (HR) for hip fracture between the lowest and the highest group was 17.80 (95% CI: 12.86-24.65) among women and 23.40 (13.93-39.30) in men. Observed number of hip fractures agreed quite well with the predicted number, except for the youngest and oldest men. AUC was 0.81 (0.78-0.83) for women and 0.79 (0.76-0.83) for men. Self-reported fall was an independent risk factor for fracture in women (HR 1.64, 1.20-2.24), and among men, this was not significant (1.09, 0.65-1.83). CONCLUSIONS: FRAX without BMD predicted hip fracture reasonably well. In the age group 70-90 years, falls seemed to imply an additional risk among women.  
  Address Department of Gynecology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0937-941X ISBN Medium  
  Area Expedition Conference  
  Notes PMID:28668994 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 1930  
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