Odds ratios for prevalent metabolic syndrome according to quartiles of total testosterone, SHBG and free testosterone – results from cross-sectional studies.

Abbreviations: BMI = body mass index; HOMA-IR = homeostasis model assessment for insulin resistance; SHBG = sex hormone-binding globulin; OR = odds ratio; CI = confidence interval. Lifestyle factors: smoking, alcohol consumption and physical activity. Model 1: adjusted for age. Model 2: Model 1 plus lifestyle factors. Model 3: Model 2 plus BMI. Model 4: Model 3 HOMA-IR.