Table 3.

Multivariate logistic model assessing the relative impact of different parameters on pregnancy rate per OPU in Group A and B

Parameter (n = 519)	OR (95 % CI)	P-value
Age (years)	0.95 (0.88–1.01)	0.119
No. of inseminated oocytes	0.99 (0.84–1.15)	0.854
No. of fertilized oocytes	1.08 (0.90–1.31)	0.403
No. of transferred embryos	1.63 (1.12–2.39)	0.011
Oocyte source (pre-ovulatory vs. antral follicles)	1.19 (0.74–1.94)	0.472

OR odds ratio, CI confidence interval