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Results of ROC analyses for plasma level of fibrinogen to evaluate DFU risk and severity. A ROC curves for plasma level of fibrinogen to evaluate DFU risk and severity using combined data from Set1 and Set2. B Youden’s index based on different cut-off values for plasma level of fibrinogen to evaluate DFU risk and severity using combined data from Set1 and Set2. DFU diabetic foot ulcer; ROC receiver operating characteristic
