INS and metabolic syndrome: Then, we reclassified the same group of participants in the discovery cohort according to variables, including HbA1c, OGTT-derived glucose levels (five-time point blood glucose levels during OGTT), and insulin levels (five-time point blood insulin levels during OGTT), and anthropometric variables (body mass index [BMI], waist circumference, hip circumference), as well as variables related to dyslipidemia and insulin resistance (fasting triglyceride, HDL cholesterol).