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Exploring the association between Frailty Index and Knee osteoarthritis in middle-aged and older Chinese adults: A cross-sectional analysis of data from the China Health and Retirement Longitudinal Study

Fig 3

ROC curves and model evaluation of six ML models in traning set.

(A): ROC curves; (B): Calibration Curves; (C): Decision curves analysis.

Fig 3

doi: https://doi.org/10.1371/journal.pone.0343370.g003