Table I.

Baseline characteristics of the patients in FET and Fresh cycle groups

Variable		FET (n=285)	Fresh (n=1134)	p-value
Maternal age (years)		30.53 ± 4.51	30.46 ± 4.84	0.907
Infertility duration* (years)		7 (IQR=5)	7 (IQR=6)	0.172
Causes of infertility
	Male factor	126 (44.2%)	512 (45.1%)	0.915
	Ovary factor	64 (22.5%)	226 (19.9%)
	Tubal factor	32 (11.2%)	129 (11.4%)
	Endometriosis	3 (1.1%)	13 (1.1%)
	Mixed	60 (21.1%)	254 (22.4%)

Data are presented as mean ± SD.

FET: Frozen embryo transfer

^*Median (Interquartile range).