Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional study

Objective Elderly patients presenting with falls are known to carry an extremely high risk of future fragility fractures. Current osteoporosis guidelines recommend using fracture risk calculators such as FRAX, QFracture or Garvan to guide management. However, they differ considerably in their inputs...

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Main Authors: Sophia von Widekind, Georgi Todorov, Susan Brook, Nicole Quah Qin Xian, Bernard Freudenthal, Alexander N Comninos
Format: Article
Language:English
Published: BMJ Publishing Group 2022-07-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/12/7/e060282.full
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author Sophia von Widekind
Georgi Todorov
Susan Brook
Nicole Quah Qin Xian
Bernard Freudenthal
Alexander N Comninos
author_facet Sophia von Widekind
Georgi Todorov
Susan Brook
Nicole Quah Qin Xian
Bernard Freudenthal
Alexander N Comninos
author_sort Sophia von Widekind
collection DOAJ
description Objective Elderly patients presenting with falls are known to carry an extremely high risk of future fragility fractures. Current osteoporosis guidelines recommend using fracture risk calculators such as FRAX, QFracture or Garvan to guide management. However, they differ considerably in their inputs and may therefore provide contrasting risk estimations in certain individuals. In this study, we compare these risk calculators in a high-risk cohort of elderly patients admitted to hospital with falls.Design Hospital-based cross-sectional study.Setting Secondary care, London, UK.Participants Data from 120 consecutive elderly patients who had falls presenting to a single hospital over 4 months were collected. 10-year major and hip fracture risks were calculated using FRAX, QFracture and Garvan. 1-year major and hip fracture risks from QFracture were assessed against prospective incidence of fracture.Results Median 10-year major fracture risk was: FRAX 19.5%, QFracture 26.0%, Garvan 32.5%. Median 10-year hip fracture risk was: FRAX 9.6%, QFracture 21.1%, Garvan 6.5%. Correlation between FRAX and QFracture was r=0.672 for major, r=0.676 for hip fracture (both p<0.0001); FRAX and Garvan r=0.778 (p<0.0001) for major, r=0.128 (p=0.206) for hip fracture; QFracture and Garvan r=0.658 (p<0.0001) for major, r=0.318 (p<0.001) for hip fracture. QFracture 1-year predicted major and hip fracture rates were 1.8% and 1.2%, respectively, compared with actual rates of 2.1% and 0%, respectively.Conclusions Although strong correlations between calculators were observed in the study cohort, there were differences of up to 13% between estimated risks. QFracture captured several elderly-specific inputs not considered by other calculators and so projected higher fracture risk than the other calculators. QFracture provided 1-year fracture risks that were comparable with the prospective observed fracture incidence in the cohort. This study has important clinical implications for the use of fracture risk calculators to guide treatment decisions, particularly in the high-risk cohort of elderly patients admitted to hospital following falls.
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spelling doaj-art-01b02a9b7bdb4d7982dc5a75ad4239af2025-01-30T15:55:09ZengBMJ Publishing GroupBMJ Open2044-60552022-07-0112710.1136/bmjopen-2021-060282Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional studySophia von Widekind0Georgi Todorov1Susan Brook2Nicole Quah Qin Xian3Bernard Freudenthal4Alexander N Comninos5Department of Acute Medicine, Imperial College Healthcare NHS Trust, London, UKDepartment of Medicine for the Elderly, West Middlesex University Hospital, Isleworth, UKDepartment of Medicine for the Elderly, Imperial College Healthcare NHS Trust, London, UKDepartment of Acute Medicine, Imperial College Healthcare NHS Trust, London, UKEndocrine Bone Unit, Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UKEndocrine Bone Unit, Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UKObjective Elderly patients presenting with falls are known to carry an extremely high risk of future fragility fractures. Current osteoporosis guidelines recommend using fracture risk calculators such as FRAX, QFracture or Garvan to guide management. However, they differ considerably in their inputs and may therefore provide contrasting risk estimations in certain individuals. In this study, we compare these risk calculators in a high-risk cohort of elderly patients admitted to hospital with falls.Design Hospital-based cross-sectional study.Setting Secondary care, London, UK.Participants Data from 120 consecutive elderly patients who had falls presenting to a single hospital over 4 months were collected. 10-year major and hip fracture risks were calculated using FRAX, QFracture and Garvan. 1-year major and hip fracture risks from QFracture were assessed against prospective incidence of fracture.Results Median 10-year major fracture risk was: FRAX 19.5%, QFracture 26.0%, Garvan 32.5%. Median 10-year hip fracture risk was: FRAX 9.6%, QFracture 21.1%, Garvan 6.5%. Correlation between FRAX and QFracture was r=0.672 for major, r=0.676 for hip fracture (both p<0.0001); FRAX and Garvan r=0.778 (p<0.0001) for major, r=0.128 (p=0.206) for hip fracture; QFracture and Garvan r=0.658 (p<0.0001) for major, r=0.318 (p<0.001) for hip fracture. QFracture 1-year predicted major and hip fracture rates were 1.8% and 1.2%, respectively, compared with actual rates of 2.1% and 0%, respectively.Conclusions Although strong correlations between calculators were observed in the study cohort, there were differences of up to 13% between estimated risks. QFracture captured several elderly-specific inputs not considered by other calculators and so projected higher fracture risk than the other calculators. QFracture provided 1-year fracture risks that were comparable with the prospective observed fracture incidence in the cohort. This study has important clinical implications for the use of fracture risk calculators to guide treatment decisions, particularly in the high-risk cohort of elderly patients admitted to hospital following falls.https://bmjopen.bmj.com/content/12/7/e060282.full
spellingShingle Sophia von Widekind
Georgi Todorov
Susan Brook
Nicole Quah Qin Xian
Bernard Freudenthal
Alexander N Comninos
Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional study
BMJ Open
title Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional study
title_full Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional study
title_fullStr Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional study
title_full_unstemmed Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional study
title_short Comparison of fracture risk calculators in elderly fallers: a hospital-based cross-sectional study
title_sort comparison of fracture risk calculators in elderly fallers a hospital based cross sectional study
url https://bmjopen.bmj.com/content/12/7/e060282.full
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