Low Total Testosterone Levels in Men with Newly Diagnosed Early-Onset Type 2 Diabetes: A Cross-Sectional Study in China

Figure 2

The correlation analysis between sex hormone concentrations and metabolic indexes. The Pearson/Spearman correlation analysis was performed between biochemical indicators and the levels of sex hormones in 153 patients with T2DM (total) and was also performed in the early-onset T2DM () and late-onset T2DM () groups separately. Heatmap showing the correlation coefficient () levels. and . FGLA: fasting glucagon; PGLA: postprandial glucagon; HOMA-IR: homeostatic model assessment of insulin resistance; FC-p: fasting C-peptide; PC-p: postprandial C-peptide; ApoA-1: apolipoprotein A-1; ApoB: apolipoprotein B; HDL: high-density lipoprotein; LDL: low-density lipoprotein; TG: triglyceride; TC: total cholesterol; FBG: fasting blood glucose; HbA1c: glycated hemoglobin; BMI: body mass index; WC: waist circumference; DHEA: dehydroepiandrosterone sulfate; SHBG: sex hormone binding globulin; LH: luteinizing hormone; FSH: follicle-stimulating hormone; E2: estradiol; P: progestin; PRL: prolactin; TT: total testosterone; FT: free testosterone; Bio-T: bioactive testosterone.