Article Document Academic Article Information Content Entity Continuant Continuant Journal Article Entity Entity Generically Dependent Continuant 2025-06-24T07:47:13 RDF description of Performance of FRAX and FRAX-based treatment thresholds in women aged 40 years and older: the Manitoba BMD Registry - http://repository.healthpartners.com/individual/document-rn16433 Performance of FRAX and FRAX-based treatment thresholds in women aged 40 years and older: the Manitoba BMD Registry 10.1002/jbmr.3717 document-rn16433 Bone Density 16810 Osteoporosis 8 Forecasting Risk Assessment 2022-02-21T22:48:57.408-06:00 Journal of Bone and Mineral Research 11115 Clinical Trials <p>We examined among women aged >/=40 years the performance of the Fracture Risk Assessment Tool (FRAX) and FRAX-based osteoporosis treatment thresholds under the US National Osteoporosis Foundation (NOF) and UK National Osteoporosis Guideline Group (NOGG) guidelines. We used registry data for all women aged >/=40 years in Manitoba, Canada, with baseline bone mineral density (BMD) testing (n = 54,459). Incident major osteoporotic fracture (MOF), hip fracture, and clinical fracture were assessed from population-based health services data (mean follow-up 10.5 years). Age-stratified hazard ratios (HR) were estimated from Cox regression models. We assessed the sensitivity, specificity, positive predictive value (PPV), number needed to screen (NNS), and number needed to treat (NNT) to prevent a fracture (assuming 20% relative risk reduction on treatment) for osteoporosis treatment thresholds under the NOF and NOGG guidelines. Femoral neck T-score and FRAX (with and without BMD) predicted all fracture outcomes at all ages. There was good calibration in FRAX-predicted versus observed 10-year MOF and hip fracture probability. Overall sensitivity (PPV) for incident MOF was 25.7% (24.0%) for femoral neck T-score </= -2.5; 20.3% (26.3%) for FRAX (with BMD)-predicted 10-year MOF risk >/=20% (NOF threshold); 27.3% (22.0%) for FRAX-predicted 10-year MOF risk >/= age-dependent cut-off (NOGG threshold), 59.4% (19.0%) for the NOF treatment algorithm; and 28.5% (18.4%) for the NOGG treatment algorithm. Sensitivity for identifying incident MOF varied by age, ranging from 0.0% to 26.3% in women 40 to 49 years old and from 49.0% to 93.3% in women aged 80+ years. The gradient of risk for fracture prediction from femoral neck T-score and FRAX (with and without BMD) as continuous measures was strong across the age spectrum. The sensitivity and PPV of the strategies based on dichotomous cut-offs are low, especially among women aged 40 to 49 years (who have lowest incidence rates). Threshold-based approaches should be reassessed, particularly in younger women. (c) 2019 American Society for Bone and Mineral Research.<p> Fractures Registries 34 public