Table 5. The multivariate stepwise logistic regression analysis for indicators with P<0.1 in the univariate logistic analysis.

Variable	Estimate	Se	Z	Wald	P	OR (95% CI)	Significant markers
Pregnancy
(Intercept)	0.496	0.759	0.653	0.426	0.51
AMH	0.115	0.083	1.378	1.899	0.16	1.121 (0.953, 1.320)
Clinical pregnancy
(Intercept)	0.496	0.759	0.653	0.426	0.51
The first change of EV on day P + 2
Declining	ref
Nondeclining	−1.203	0.577	−2.087	4.354	0.03	0.300 (0.097, 0.930)	P<0.05
The change of E2 on day P + 2
Declining	ref
Nondeclining	0.914	0.515	1.775	3.152	0.07	2.494 (0.909, 6.839)
P on P + 2 day	−0.07	0.038	−1.844	3.399	0.06	0.932 (0.865, 1.004)
AMH	0.182	0.093	1.943	3.775	0.05	1.199 (0.998, 1.440)
Ongoing pregnancy
(Intercept)	−1.384	0.63	−2.196	4.823	0.02
The first change of EV on day P + 2
Declining	ref
Nondeclining	−1.549	0.629	−2.463	6.066	0.01	0.212 (0.062, 0.729)	P<0.05
The second change of EV on day of ET
Declining	ref
Nondeclining	1.251	0.598	2.09	4.369	0.03	3.493 (1.081, 11.284)	P<0.05
AMH	0.156	0.082	1.889	3.569	0.05	1.168 (0.994, 1.373)

AMH, anti-Müllerian hormone; E2, estradiol; P, progesterone; EV, endometrial volume; ET, embryo transfer; CI, confidence interval; OR, odds ratio.