Frontiers in Endocrinology
Body roundness index and its association with QUS-defined osteoporosis and bone mineral density in middle-aged and older adults: a cross-sectional analysis
Objectives This study evaluated the association between Body Roundness Index (BRI) and QUS-defined osteoporosis, its discriminative ability, empirical cutoff, and subgroup heterogeneity in middle-aged and older adults. Methods We analyzed cross-sectional data from 1,444 community-dwelling adults aged 35–75 years. Osteoporosis was defined using tibial quantitative ultrasound-derived T-scores. Receiver operating characteristic curves assessed discrimination, restricted cubic splines examined dose-response relationshi …