Table 2.

Contributing factors to immature oocyte incidence (n=3,920)

	MI			GV
	R2	β	p	R2	β	p
Total gonadotropin dose	0.042	-0.046	0.004	0.050	-0.035	0.029
Estradiol level at hCG trigger day	0.146	0.324	<0.001	0.155	0.342	<0.001
Interval between hCG and oocyte retrieval	0.042	-0.015	0.368	0.050	-0.014	0.385
	MI/oocyte			GV/oocyte
	R2	β	p	R2	β	p
Total gonadotropin dose	0.001	-0.009	0.567	0.002	0.009	0.592
Estradiol level at hCG trigger day	0.001	0.015	0.491	0.003	0.034	0.107
Interval between hCG and oocyte retrieval	0.002	-0.025	0.135	0.003	-0.015	0.356

hCG: human chorionic gonadotropin;

R²: effect;

β: standardized regression coefficient.

^*Data was adjusted for maternal age, maternal BMI and total FSH dose.