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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