Fig. 1

The flowchart of the study design. NHANES, National healthy and nutritional examination survey; DM, Diabetes mellitus; HbA1c, hemoglobin A1c; FPG, fast plasma glucose; OGTT, oral glucose tolerance test
The flowchart of the study design. NHANES, National healthy and nutritional examination survey; DM, Diabetes mellitus; HbA1c, hemoglobin A1c; FPG, fast plasma glucose; OGTT, oral glucose tolerance test