Fig. 3

(A) Nomogram integrating the number of obstructed coronary arteries (Lesion, defined as ≥ 50% stenosis), previous myocardial infarction (MI), creatinine (Cr) level, and left ventricular ejection fraction (EF) to estimate the 3-, 6-, and 9-month risk of disease progression in diabetic patients with coronary artery disease (CAD). To use the nomogram, draw vertical lines from each variable to the corresponding points scale, sum these points to obtain a total score, and then reference the probability scale at the bottom to determine the individual patient’s predicted risk. (B) Kaplan–Meier survival curves for patients stratified into high- and low-risk groups according to the median nomogram-derived risk score. Patients in the high-risk group showed a significantly higher incidence of disease progression compared to those in the low-risk group (log-rank test, P = 0.00077)