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Lookup NU author(s): Emeritus Professor Roger Francis
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A Summary Under current guidelines, based on prior fracture probability thresholds, inequalities in access to therapy arise especially at older ages (a parts per thousand yen70 years) depending on the presence or absence of a prior fracture. An alternative threshold (a fixed threshold from the age of 70 years) reduces this disparity, increases treatment access and decreases the need for bone densitometry.Introduction Several international guidelines set age-specific intervention thresholds at the 10-year probability of fracture equivalent to a woman of average BMI with a prior fracture. At older ages (a parts per thousand yen70 years), women with prior fracture selected for treatment are at lower average absolute risk than those selected for treatment in the absence of prior fracture, prompting consideration of alternative thresholds in this age group.Methods Using a simulated population of 50,633 women aged 50-90 years in the UK, with a distribution of risk factors similar to that in the European FRAX derivation cohorts and a UK-matched age distribution, the current NOGG intervention and assessment thresholds were compared to one where the thresholds remained constant from 70 years upwards.Results Under current thresholds, 45.1 % of women aged a parts per thousand yen70 years would be eligible for therapy, comprising 37.5 % with prior fracture, 2.2 % with high risk but no prior fracture and 5.4 % selected for treatment after bone mineral density (BMD) measurement. Mean hip fracture probability was 11.3, 23.3 and 17.6 %, respectively, in these groups. Under the alternative thresholds, the overall proportion of women treated increased from 45.1 to 52.9 %, with 8.4 % at high risk but no prior fracture and 7.0 % selected for treatment after BMD measurement. In the latter group, the mean probability of hip fracture was identical to that observed in women with prior fracture (11.3 %). The alternative threshold also reduced the need for BMD measurement, particularly at older ages (> 80 years).Conclusions The alternative thresholds equilibrate fracture risk, particularly hip fracture risk, in those with or without prior fracture selected for treatment and reduce BMD usage at older ages.
Author(s): McCloskey E, Kanis JA, Johansson H, Harvey N, Oden A, Cooper A, Cooper C, Francis RM, Reid DM, Marsh D, Selby P, Thompson F, Hewitt S, Compston J
Publication type: Article
Publication status: Published
Journal: Osteoporosis International
Year: 2015
Volume: 26
Issue: 8
Pages: 2091-2099
Print publication date: 01/08/2015
Online publication date: 16/06/2015
Acceptance date: 13/05/2015
ISSN (print): 0937-941X
ISSN (electronic): 1433-2965
Publisher: Springer
URL: http://dx.doi.org/10.1007/s00198-015-3176-0
DOI: 10.1007/s00198-015-3176-0
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