Table 1. Comparison of the female age, male age, duration of infertility, endometrial thickness on hCG day and PR between pregnant group and non-pregnant group.

	Female age (y)	Male age (y)	Duration of infertility (y)	Endometrial thickness (mm)	PR (%)
Pregnant group	29.36 ± 3.16	31.24 ± 4.09	2.12 ± 1.32	9.94 ± 1.86	31.72 ± 9.27
Non-pregnant group	30.45 ± 3.68	31.67 ± 4.10	2.65 ± 1.60	9.41 ± 2.17	32.32 ± 9.68
P value	0.009**	0.362	0.003**	0.032*	0.592