ALB and diabetic kidney disease: As shown in Figure 2, the best cut-off value of SII was 609.85 for predicting DKD (sensitivity: 48.3%; specificity: 72.8%; and AUC: 0.627; Figure 2A), 601.71 (sensitivity: 43.9%; specificity: 72.3%; and AUC: 0.596; Figure 2B) for predicting DKD stages 1–2 Alb, and 589.27 (sensitivity: 61.1%; specificity: 71.1%; and AUC: 0.695; Figure 2C) for predicting DKD-non-Alb+DKD stage 3 Alb.