Fig. 3

SHAP-based analysis of risk factor importance and feature value interactions for persistent SARS-CoV-2 infection. This figure demonstrates SHAP-based interpretation of key risk factors in the Random Forest model for persistent SARS-CoV-2 infection prediction: (1) Horizontal SHAP values indicate directional contributions to predictions (positive values increase risk, negative values decrease risk); (2) Point colors represent feature values (purple: high values/positive status, yellow: low values/negative status). SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; SHAP, SHapley Additive exPlanations