Anxiety and depression in recurrent implantation failure after frozen-thawed embryo transfer and efficacy of endometrial receptivity testing

Table 6 Univariate analysis of clinical pregnancy determinants

Variable	Clinical pregnancy group (n = 160)	Non-clinical pregnancy group (n = 211)	χ2/t	P value
Age (years)			40.251	< 0.0001
≤ 35	107	71
> 35	53	140
BMI (kg/m2)	22.05 ± 2.30	21.87 ± 2.07	0.925	0.355
Type of infertility			3.789	0.052
Primary	60	100
Secondary	100	110
Infertility duration (years)			1.042	0.594
< 3	43	67
3-5	63	77
> 5	54	67
Embryo type transferred			26.251	< 0.0001
Blastocyst-stage embryo	95	69
Cleavage-stage embryo	65	142
Number of embryos transferred (n)	1.33 ± 0.47	1.16 ± 0.37	3.898	0.0001
Total treatment cycles	1.53 ± 0.50	1.85 ± 0.41	6.839	< 0.0001
Endometrial thickness (mm)	10.08 ± 0.61	9.17 ± 0.55	14.980	< 0.0001
Anxiety			6.416	0.011
Yes	100	104
No	60	107
Depression			4.723	0.030
Yes	108	119
No	52	92

BMI: Body mass index.