Table 1: Characteristics from freeze-all cycles when the trigger was performed by using hCG or GnRH agonist
Cycles’ Characteristics	hCG	GnRH agonist	P
Number of cycles	49	74
Number of patients	45	69
Patient’s age	31.8 ± 3.8	31.9 ± 3.6	0.887
Estradiol level (E2) on trigger day	4039 ± 2112	5328 ± 3036	0.006
Total dose of FSH for COS	2259 ± 714	2067 ± 481	0.101
Aspirated follicles	34.5 ± 11,7	41.3 ± 17.9	0.015
Retrieved oocytes	25.3 ± 9,6	30.8 ± 11.3	<0.001
Retrieved oocytes rate	73.4%	74.5%	0.59
MII number	19.6 ± 7.8	22.0 ± 8.1	0.123
MII rate	77.2%	71.3%	<0.001
Normal fertilization rate	79.3%	84.0%	0.011
Number of cryopreserved embryos	9.2 ± 4.5	9.9 ± 4.9	0.422