CRP and diabetes mellitus: Notably, after adjusting for BMI, sex, age, UA, HbA1c, alcohol consumption, smoking status, diabetes status, hypertension status, antihypertensive treatment status, and antidiabetic treatment status, the RCS curves indicated significant linear relationships between the TyG index, non-HDL-C level and CRP level and increased arterial stiffness in both large surveys (all P values for nonlinearity > 0.05), as shown in Fig. 1.