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Table 3 Univariable and multivariable logistic regression analysis of factors related to ongoing pregnancy

From: The timing for initiating estrogen stimulation in artificial cycle for frozen-thawed embryo transfer can be flexible

Variables

Univariable analysis

Multivariable analysis

OR (95% CI)

p value

OR (95% CI)

p value

Age

0.928 (0.892–0.966)

< 0.001

0.942 (0.904–0.982)

0.005

BMI

0.961 (0.920–1.005)

0.083

0.965 (0.922–1.010)

0.129

Initial day of estrogen usage

1.016 (0.978–1.054)

0.420

1.021 (0.981–1.063)

0.308

Duration of estrogen usage

1.018 (0.979–1.059)

0.371

1.037 (0.992–1.084)

0.109

Peak endometrial thickness

1.081 (0.969–1.205)

0.162

1.115 (0.991–1.255)

0.070

Optimal embryos transferred

2.602 (1.619–4.180)

< 0.001

2.321 (1.429–3.770)

0.001