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Background. To explore the prevalence of bone loss among patients with rheumatoid arthritis and healthy controls and further explored the risk factors for osteopenia and osteoporosis of RA patients. Methods. A cross-sectional survey was undertaken in four hospitals in different districts in South China. Case records, laboratory tests, and bone mineral density (BMD) results were included. Multivariable logistic regression analysis, least absolute shrinkage, selection operator (LASSO), and randomdoi:10.21203/rs.3.rs-289906/v1 fatcat:eyi4orusmved5jkhd7fbac6d6y