Fig. 5. Receiver operating characteristic curve of the oxidation-reduction potential (mV/106 sperm/mL) in different groups of abnormal sperm parameters: oligozoospermic group (A), asthenozoospermic group (B), and teratozoospermic group (C). Acc, accuracy; AUC, area under the curve; NPV, negative predictive value; PPV, positive predictive value; Sens, sensitivity; Spec, specificity.
