INS and prediabetes syndrome: ClI following the OGTT was negatively associated with growing age (p = 0.006), systolic blood pressure (p < 0.001), puberty (p = 0.004), HbA1c (p < 0.001), HOMA-IR (p < 0.001), both parameters of insulin secretion (p < 0.001) and prediabetes (p = 0.022).