IGHE and diabetes mellitus: One-way ANOVA, Kruskal-Wallis test, or chi-square test demonstrated that FPG, 2h-OGTT, HOMA-β, HOMA-IR, TG, WC, AC, WHR, hs-CRP, and IgE levels were significantly higher in patients with pre-diabetes or diabetes mellitus than in the normal glucose group (NGG).