ALB and bone metastasis: Univariate analysis of the training set revealed statistically significant differences between the fall group and nonfall group in 14 variables: admission type, bone metastasis, multiple metastases, diabetes, nocturia frequency ≥3 times, sleep disorders, constipation, activities of daily living (ADL) score, frailty score, nutritional score, grip strength, gait, gait speed, and albumin levels.