CRP and peripheral arterial disease: PAD: peripheral artery disease; CAD: coronary artery disease; CVD: cerebrovascular diseases; HDLc: high-density lipoprotein-cholesterol; LDLc: low-density lipoprotein-cholesterol; TC: total cholesterol; TG: triglyceride; CRP: C-reactive protein; WBC: white blood cell; TyG: triglyceride-glucose index