Table 1.

Baseline characteristics of the population.

Characteristics	Study group (n = 158)	Control group (n = 158)	p Value
Patients
Age (year)	35.10 ± 3.38	35.51 ± 3.25	0.28
Gravida (%)			0.29
0	62.03	67.09
1	28.48	22.15
2	8.23	6.96
≥ 3	1.27	3.80
Parity (%)			1
0	87.34	87.34
≥ 1	12.66	12.66
Previous Abortion (%)			0.65
< 3 times	98.73	98.10
≥ 3 times	1.27	1.80
Infertile period (months)	29.00 (18.00, 57.50)	32.5 (20.00, 54.25)	0.53
Previous ET times			0.25
0	87	86
1	51	49
2	20	19
3	0	4
Endometrial preparation (day)	17.35 ± 3.58	17.42 ± 3.22	0.86
Endometrial thickness (mm)	9.56 ± 1.39	9.56 ± 1.44	0.98
Embryonic stage (%)			0.24
Cleavage stage	37.97	31.65
Blastocyst stage	62.03	68.35
Number of embryos	1.68 ± 0.47	1.66 ± 0.48	0.63
Bacterial Vaginosis (%)	16.46	14.56	0.64
Fungus (%)	7.59	5.70	0.50

ET embryo transfer.

Data are mean ± SD, n (%),median (quatile range), or unless otherwise specified.