Table 2.

Multivariate regression analysis of progesterone levels on hCG trigger day with clinical pregnancy outcomes in fresh and frozen–thawed cycles.

	Fresh cycles			Frozen–thawed cycles
	OR	95%CI	p-value	OR	95%CI	p-value
Clinical pregnancy	0.53	0.32, 0.87	0.0114	0.88	0.60, 1.27	0.4851
p ≤ 1 ng/ml	Reference			Reference
p = 1-2 ng/ml	0.51	0.33, 0.79	0.0028	0.75	0.51, 1.09	0.1273
Early miscarriage	0.52	0.16, 1.77	0.2992	1.21	0.64, 2.28	0.5569
p ≤ 1 ng/ml	Reference			Reference
p = 1-2 ng/ml	1.3	0.44, 3.84	0.6373	1.05	0.55, 2.00	0.8882

Adjust for: Female age; Female BMI; Infertility type; Duration of infertility; Basal FSH; AFC; Gn dosage; E₂ concentration on hCG trigger day; No. of retrieved oocytes; EMT.