Table 2.

Multivariate analysis results of the selected features for SET pregnancy, DET pregnancy and twin risk prediction

Selected features	P value
	SET	DET
	Pregnancy	Pregnancy	Twin Risk
Age	0.0222*	< 0.0001*	< 0.0001*
Attempt times of IVF	< 0.001*	< 0.0001*	< 0.0001*
Antral follicle count	0.3332	0.4016	0.4121
Follicle stimulating hormone	0.7307	0.8141	0.4633
Luteinizing hormone	0.3501	0.7230	0.4616
E2 on HCG day	0.0053*	0.9040	0.7684
Endometrial Thickness	0.0046*	< 0.0001*	0.2080
MII	0.9455	0.9444	0.0546
2PN	0.1041	0.9068	0.1021
Oocyte Number	0.7510	0.8897	0.6324
2PN/MII	0.5038	0.7772	0.0148*
Stimulation Protocol
Agonist Protocol	0.3692	0.2019	0.4961
Endometrial Type
A	0.8531	0.5324	0.4914
C	0.7138	0.0887	0.4614
Secondary Infertility	0.0816	0.2445	0.6809
Fertilization Method
ICSI	0.2365	0.5069	0.8492
Embryo Features
Blastomere Number	0.5422	NUa	NU
Fragment	0.1585	NU	NU
Equality	0.5399	NU	NU
Embryo Scores
P1 + P2	NU	< 0.001*	0.1344
P1 × P2	NU	0.2040	0.007*

*P < 0.05

^aNU means this feature was not used in the corresponding level