SHBG and polycystic ovary syndrome: A logistic regression model of afamin concerning case–control status showed a higher risk for an increase in afamin concentration (per 10 mg/l increase: odds ratio (OR)=1.307, 95% CI=1.082–1.579, P=0.006) being a patient with PCOS, which disappeared, however, if adjusted for age, BMI, FTI, and SHBG (per 10 mg/l increase: OR=1.050, 95% CI=0.800–1.377, P=0.727).