Additional file 2: Figure S2. Risk score for predicting potential DKD patients based on the 4-protein classifier. a. Risk scores and the 4 marker protein expression levels of the high-risk ���pre-DKD��� patients at indicated times. The risk score was calculated by the predict_proba function in the sklearn (version 0.21.2) package based on Logistic Regression Classifier. b. Risk scores and the 4 marker protein expression levels of the diabetic patients.