Table 2.

Univariate analysis of factors associated with pregnancy outcomes.

	Clinical pregnancy		Ongoing pregnancy
	OR (95%CI)	P	OR (95%CI)	P
Female age	0.92 (0.90, 0.94)	<0.0001	0.91 (0.89, 0.93	<0.0001
Fertilization type
IVF	1		1
ICSI, Rescue-ICSI	0.91 (0.71, 1.16)	0.4578	0.93 (0.72, 1.19	0.5509
IVF & Rescue-ICSI	1.61 (0.61, 4.27)	0.3345	1.78 (0.68, 4.65	0.2384
BMI	1.01 (0.98, 1.04)	0.5275	1.02 (0.99, 1.04	0.2472
Infertility type
Secondary Infertility	1		1
Primary Infertility	1.41 (1.15, 1.74)	0.0011	1.44 (1.17, 1.78	0.0007
Duration of infertility(year)	0.97 (0.94, 1.00)	0.0689	0.97 (0.94, 1.01	0.1204
Basal FSH (mIU/ml)	0.99 (0.97, 1.02)	0.6515	0.98 (0.96, 1.01	0.1776
Basal E2 (ng/ml)	1.00 (0.99, 1.00)	0.478	1.00 (0.99, 1.00	0.2904
Basal P (ng/ml)	1.05 (0.83, 1.31)	0.7009	1.12 (0.89, 1.42	0.3187
AFC	1.03 (1.01, 1.04)	0.0059	1.02 (1.01, 1.04	0.0119
Gn dosage (IU)	1.00 (1.00, 1.00)	0.4003	1.00 (1.00, 1.00	0.2303
Gn duration (day)	1.08 (1.03, 1.13)	0.0029	1.10 (1.05, 1.16	0.0001
E2 level on hCG trigger day(pg/ml)	1.00 (1.00, 1.00)	0.1146	1.00 (1.00, 1.00	0.0748
LH level on hCG trigger day(mIU/ml)	1.00 (0.96, 1.03)	0.8449	0.98 (0.94, 1.02	0.3659
P level on hCG trigger day(ng/ml)	1.05 (0.86, 1.28)	0.6207	1.19 (0.97, 1.46	0.0946
EMT on hCG trigger day (mm)	1.09 (1.04, 1.14)	0.0001	1.08 (1.03, 1.13	0.0007
No. of retrieved oocytes	1.02 (1.00, 1.05)	0.0311	1.03 (1.01, 1.05	0.0136
No. of 2PN embryo	1.04 (1.00, 1.07)	0.0314	1.05 (1.01, 1.08	0.005
Embryo type
cleavage-stage embryo	1		1
blastocyst	1.97 (1.60, 2.42)	<0.0001	1.99 (1.61, 2.45	<0.0001

body mass index (BMI); antral follicle counting (AFC); gonadotropin (Gn); estradiol(E2), luteinizing hormone (LH), progesterone(P); endometrium thickness (EMT).