Table 3.

Univariable and multivariable logistic regression analysis for detecting prognostic factors regarding clinical pregnancy rate

Variables		Univariable logistic regression			Multivariable logistic regression
		B (SE)	OR (95% CI)	P-value	B (SE)	OR (95% CI)	P-value
Woman's age (yr)		-0.05 (0.04)	0.95 (0.86-1.04)	0.27	-0.15 (0.08)	0.85 (0.73-1)	0.06
Woman' BMI (kg/m2)		0.01 (0.05)	1.01 (0.91-1.13)	0.79	0.04 (0.06)	1.04 (0.93-1.17)	0.45
Cause of infertility
	Male factor	0.64 (0.57)	1.90 (0.61-5.86)	0.26	1.11 (0.88)	3.03 (0.53-17.32)	0.21
	Female factor	-0.19 (0.52)	0.82 (0.29-2.29)	0.71	0.17 (0.72)	1.19 (0.28-4.94)	0.81
	Mixed factor	Reference	- -	- -	-
Number of the previous ET		1.20 (1.10)	3.32 (0.38-28.98)	0.27	1.96 (1.19)	7.15 (0.68-74.86)	0.99
<No. of good quality transferred embryos		0.42 (0.26)	1.58 (0.95-2.64)	0.07	0.50 (0.27)	1.66 (0.97-2.84)	0.06
Total estrogen dose (mg)		0.005 (0.014)	1.005 (0.97-1.03)	0.75	0.002 (0.016)	1.002 (0.97-1.03)	0.90
Study groups
	HRT	0.001 (0.41)	1.0 (0.45-2.22)	0.99	0.64 (0.62)	1.89 (0.55-6.40)	0.30
	HRT+GnRHa	Reference	- -	- -	-
BMI: Body mass index, OR: Odds ratio, CI: Confidence interval, HRT: Hormone replacement therapy, GnRHa: Gonadotropin-releasing hormone agonist, ET: Embryo transfer