Effect of intrauterine perfusion of granular leukocyte-colony stimulating factor on the outcome of frozen embryo transfer

Table 4 Baseline patient features and pregnancy outcomes in cycles with cleavage stage embryo transplantation after propensity score matching based on age and blastula/cleavage stage embryo ratio

Characteristics (cleavage stage embryo )	G-CSF group (n = 87)	Non-G-CSF group (n = 87)	P value
Age (yr), mean ± SD	35.29 ± 6.18	34.91 ± 5.67	0.673
BMI (kg/cm2), mean ± SD	20.86 ± 2.25	20.70 ± 2.73	0.674
Average infertility years (yr), mean ± SD	4.81 ± 2.13	5.01 ± 1.90	0.514
Primary infertility cycle, n (%)	32 (36.78)	34 (39.08)	0.755
Secondary infertility cycle, n (%)	55 (63.22)	53 (60.92)
Average endometrial thickness (mm), mean ± SD	7.17 ± 0.39	7.26 ± 0.38	0.125
Cycle with one transplanted embryo, n (%)	14 (16.09)	16 (18.39)	0.161
Cycle with two transplanted embryos, n (%)	73 (83.91)	71 (81.61)
Clinical pregnancy rate, %	43.68 (38/87)	44.83 (39/87)	0.879
Embryo implantation rate, %	30.63 (49/160)	30.38 (48/158)	0.962
Ectopic pregnancy rate, %	2.68 (1/38)	1.49 (1/39)	> 0.9991
Early abortion rate, %	14.29 (3/38)	22.39 (9/39)	0.066

¹Fisher’s exact test. G-CSF: Granular leukocyte-colony stimulating factor; BMI: body mass index.