Fig. 2
From: Trajectories of glycated hemoglobin of T2DM and progress of arterial stiffness: a prospective study
HbA1c trajectory groups during the following time. Low-stable, characterized by maintaining low HbA1c levels throughout follow-up; U-shape, the HbA1c was decreased first and reached the bottom at around two years, then the HbA1c increased during the next following time; Moderate-decrease, starting with an average HbA1c level and experiencing a slight decrease; High-increase, beginning with an elevated HbA1c level and experiencing a slow increase trend during the following time