Additional single dose GnRH agonist during luteal phase support may improve live birth rate in GnRHa-HRT frozen–thawed embryo transfer cycle: a retrospective cohort study

Table 3 Analyses of factors affecting the ongoing pregnancy rate and live birth rate using logistic regression

	Ongoing pregnancy		Live birth
	Adjusted OR^a (95% CI)	p value	Adjusted OR^a (95% CI)	p value
Luteal GnRHa vs. control	2.04 (1.20–3.47)	0.008	2.03 (1.20–3.45)	0.009
Age (years)	0.83 (0.76–0.90)	< 0.001	0.83 (0.76–0.90)	< 0.001
BMI (kg/m²)	1.09 (0.99–1.19)	0.078	1.07 (0.98–1.18)	0.145
Infertility duration (years)	1.04 (0.94–1.15)	0.421	1.02 (0.92–1.13)	0.676
Types of infertility	0.83 (0.48–1.43)	0.510	0.87 (0.50–1.49)	0.602
Basal FSH (IU/l)	0.94 (0.84–1.06)	0.307	0.91 (0.80–1.04)	0.161
AMH (ng/mL)	0.96 (0.88–1.05)	0.347	0.93 (0.85–1.02)	0.122
Endometrial thickness (mm)	1.03 (0.93–1.15)	0.519	1.00 (0.90–1.11)	0.959
Day of embryo transfer	2.32 (1.30–4.16)	0.005	2.32 (1.28–4.19)	0.005
No. of transferred embryos	1.03 (0.72–1.47)	0.878	1.07 (0.74–1.53)	0.724
Quality of transferred embryos	1.29 (0.77–2.16)	0.331	1.51 (0.89–2.56)	0.128

OR odds ratio, CI confidence interval, BMI body mass index, FSH follicle- stimulating hormone; AMH anti-Müllerian hormone
^aAdjustment for age, BMI, infertility duration, types of infertility, basal FSH, AMH, endometrial thickness, day of embryo transfer, number of transferred embryos and quality of transferred embryos

ISSN: 1471-2393