The treated group’s trajectories of HbA1c (A), FPG (B), and BMI (C) classified by the untreated duration. Patients were divided into the five groups of <2 years, ≥2 and <3 years, ≥3 and <4 years, ≥4 and <5 years, and ≥5 years. Data of the trajectories are shown as mean values. Error bars show standard errors.