Univariate regression analysis was established with β values in patientsin the CHD without T2DM group as the dependent variable, while with age, gender,BMI, history of smoking and drinking, hypertension, atrial fibrillation, heartfailure, LDL-C, HDL-C, triglyceride, total cholesterol, Hb, glucose, RBP4, CRP,CK-MB, cardiac troponin T, and NT-proBNP as independent variables, respectively.The following variables were screened out as influencing factors for βvalues—RBP4 (p = 0.104), age (p < 0.001), LDL-C (p= 0.001), HDL-C (p < 0.001), hypertension (p < 0.001), andsmoking history (p < 0.001). Here, RBP4 is linked to type 2 diabetes mellitus.