INS and type 2 diabetes mellitus: In men, compared to NGT, patients with IFG were more likely to have higher levels of BMI, TC, LDL-C, FPG, and HbA1c; T2DM patients were more likely to be smokers and to have higher BMI, proportions of family history of T2DM, SBP, PP, TG, FPG, HbA1c, and INS, as well as lower HDL-C.