Fig. 2From: Association of triglyceride glucose-body mass index and hemoglobin glycation index with heart failure prevalence in hypertensive populations: a study across different glucose metabolism statusA linear correlation was observed between the levels of FBG and HbA1c. The predicted HbA1c level, determined through linear regression analysis (represented by the red solid line), was calculated using the equation: Predicted HbA1c level = 3.212 + 0.431 × FBG (mmol/L)Back to article page