Table 2.

Endometrial echogenicity values after hCG trigger in the two groups

Group	N	HCG	OPU + 1	OPU + 2	OPU + 3
Pregnanta	65	0.45 ± 0.14	0.75 ± 0.12	0.78 ± 0.12	0.81 ± 0.11
Non-pregnant	65	0.45 ± 0.17	0.67 ± 0.14	0.68 ± 0.14	0.72 ± 0.14
P		0.888	< 0.001	< 0.001	< 0.001

^aPatients who achieved a clinical pregnancy