Résumé :
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[BDSP. Notice produite par INIST-CNRS R0x9V9j0. Diffusion soumise à autorisation]. Context Identification of women with low bone mineral density (BMD) is an important strategy in reducing the incidence of osteoporotic fractures. However, screening all women is not recommended. Objectives To assess the diagnostic properties of 4 decision rules-Simple Calculated Osteoporosis Risk Estimation (SCORE), Osteoporosis Risk Assessment Instrument (ORAI), Age, Body Size, No Estrogen (ABONE), and body weight less than 70 kg (weight criterion) - for selecting women for dual-energy x-ray absorptiometry (DXA) testing and to compare results with recommendations made in the National Osteoporosis Foundation (NOF) practice guidelines. Design and Setting Analysis of data from the Canadian Multicentre Osteoporosis Study, a population-based community sample, collected from 9 study centers across Canada between February 1996 and September 1997. Participants Postmenopausal women aged 45 years or older (N=2365) without bone disease who had DXA data for the femoral neck, data to apply selection criteria, and who were not currently taking estrogens or who had been taking hormone replacement therapy for 5 or more years. Main Outcome Measures Sensitivity, specificity, and area under the receiver operating characteristic (AUROC) curve of each of the 4 decision rules and the NOF guidelines for identifying women with a BMD T score of less than - 1.0 SD, less than - 2.0 SD, and no more than - 2.5 SD at the femoral neck, and percentages of women recommended for testing, stratified by BMD level and age. Results The percent of women with a BMD T score less than - 1, less than - 2, and no more than - 2.5 were 68.3%, 25.4%, and 10.0%, respectively. The AUROC curves were greatest using SCORE and ORAI. The sensitivity for identifying women with a BMD T score of less than - 2.0 was 93.7% (95% confidence interval [Cl], 91.8% - 95.6%) using the NOF guidelines and was 97.5% (95% Cl, 96.3% - 98.8%), 94.2% (95% Cl, 92.3% - 96.1%),
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