Table 2.

Outcomes of ICSI according to the E2 levels on the day of hCG administration in participants aged $<$ 37 yr

[1.455in,lr]Parameter Group	I (n = 105)	II (n = 145)	III (n = 72)	IV (n = 47)	V (n = 29)	VI (n = 104)	p-value
NRO${}^{\alpha }$	5.60 $\pm$ 2.49	7.55 $\pm$ 2.85	9.36 $\pm$ 3.49	9.19 $\pm$ 3.42	11.10 $\pm$ 3.10	12.04 $\pm$ 3.44	$<$ 0.001${}^{*}$
NE${}^{\alpha }$	3.40 $\pm$ 1.25	4.57 $\pm$ 1.77	6.01 $\pm$ 2.32	5.51 $\pm$ 1.83	5.93 $\pm$ 2.12	7.18 $\pm$ 2.29	$<$ 0.001${}^{*}$
PR${}^{\beta }$	35.2%	40.68%	37.5%	38.2%	27.5%	43.27%	0.43${}^{**}$
AR${}^{\beta }$	16.2%	8.28%	15.28%	6.38%	37.93%	6.73%	0.09${}^{***}$
Grade-A and -B embryos${}^{\beta }$	74.28%	63.47%	69.44%	65.96%	58.62%	60.57%	0.17${}^{**}$
${}^{\alpha }$Data presented as Mean $\pm$ SD, ${}^{\beta }$Data presented as %, ${}^{*}$Kruskal–Wallis test, ${}^{**}$Chi-square test, ${}^{***}$Fisher's exact test, NRO: Number of retrieved oocytes, NE: Number of embryos, PR: Pregnancy rate, AR: Abortion rate