Table 3.

Multivariable mixed-effects logistic regression analysis of pregnancy outcomes in day 3 embryo transfer cycles across multicenters (dataset 2)

Features	aOR	95% CI
Trajectory ranking
1	2.06	1.05–6.82
2	Reference	Reference
3	0.427	0.31–0.58
4	0.296	0.15–0.59
Female age	0.98	0.95–1.00
Day 3 fragmentation
0–5%	Reference	Reference
10%	0.776	0.60–1.01
Endometrial thickness	1.49	0.98–2.25

The model was fitted with center as a random effect, adjusting for trajectory ranking, female age, endometrial thickness, and day 3 fragmentation

aOR adjusted odds ratio, CI confidence interval