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Univariate and multivariate Cox proportional hazards models were built to test the predictive ability of the nine-gene signature in the training and validation cohorts. HR, hazard ratio; CI, confidence interval; The bold p-value indicates that<0.05, which considers significant. *Hispanic or Latino vs. Non-Hispanic or Latino; #Femur vs. Non-Femur; $Osteoblastic vs. Non-Osteoblastic.
