a clear trendp < 0.05
After the adjustment, a clear trend was observed ( p < 0.05) in which higher back extensor strength was associated with increased AMM (r = 1.12) and BMM (r = 0.89).
After the adjustment, a clear trend was observed ( p < 0.05) in which higher back extensor strength was associated with increased AMM (r = 1.12) and BMM (r = 0.89).
Both the multivariate logistic regression and the XGBoost model analyses consistently demonstrated that back extensor strength was a highly significant factor of frailty and not inferior to the prediction model using grip strength.