Table 2.

Hormones and antioxidants impacting embryo quality and pregnancy success.

Clinical event	Risk factor∗	OR (CI 95%)	P value
Good-quality embryo	GR (IU/L)	1.25 (0.85, 1.86)	0.263
	CuZnSOD (NU/mL)	1.14 (0.65,2.00)	0.664
	GST (IU/L)	0.61 (0.17, 2.11)	0.441
	GPX (IU/L)	1.03 (1.00, 1.06)	0.026
	GPX (IU/g protein)	3.94 (1.13, 13.7)	0.031
Pregnancy success	GR (IU/L)	0.71 (0.52, 0.97)	0.034
	CuZnSOD (NU/mL)	0.49 (0.25, 0.96)	0.036
	GST (IU/L)	0.22 (0.06, 0.81)	0.022
	GPX (IU/L)	1.01 (1.00, 1.03)	0.109
	GPX (IU/g protein)	2.29 (0.89, 5.88)	0.085

^∗GPx: glutathione peroxidase; GR: glutathione reductase; CuZnSOD: copper zinc superoxide dismutase; GST: glutathione-S-transferase.