Table 4.

A model to predict pregnancy outcome (delivery vs no delivery) depending on the women’s parameters.

Variable	Odds ratio	95% confidence interval	P-value
Last measured estradiol cutoff 221.9 pg/mL	3.72	1.881–7.355	<0.001
Age, years	0.957	0.922–0.993	0.02
First β-hCG, mIU/mL	1.011	1.00–1.001	0.013
Fresh vs frozen cycle	1.760	1.052–2.946	0.031