Table 2.

Early pregnancy outcome before 20 weeks of gestation and live birth rate in both groups

	Fresh N = 500	Frozen N = 196	Odds ratio (95% CI)	p-value
Biochemical pregnancy	122(22.1%)	54(27%)	1.08(0.74–1.58)	0.69
Abortion	42(9%)	29(14.5%)	1.44(1.03–2.03)	0.04
Ectopic pregnancy	6(1.2%)	1(0.5%)	2.31(0.27–3.36)	0.68
Live birth	330(66%)	112(56%)	1.49(1.06–2.03)	0.01
Singletons	252(76.8%)	84(74.8%)	1.56(0.38–6.41)	0.79
Twins	64(18.9%)	24(21.6%)	0.52(0.05–4.72)	0.80
Triples	14(4.3%)	4(3.6%)	3.5(0.17–6.33)	0.81