Table 5 Multivariate logistic regression analysis results of the CLBR per oocyte retrieval cycle in different groups

PPOS

1.00 (Reference)

1.00 (Reference)

PPOS + LE

1.34 (0.64–2.83)

0.441

0.95 (0.43–2.09)

0.892

Age (year)

1.04 (0.89–1.23)

0.607

0.79 (0.70–0.91)

< 0.001*

BMI (kg/m²)

1.000 (0.89–1.12)

0.960

0.92 (0.81–1.04)

0.188

AMH (ng/ml)

0.97 (0.66–1.44)

0.893

0.87 (0.40–1.88)

0.722

AFC

0.89 (0.73–1.09)

0.261

0.91 (0.73–1.14)

0.406

Infertility duration (year)

0.83 (0.71–0.98)

0.026^*

0.92 (0.81–1.05)

0.241

Fertilization methods

IVF

1.00 (Reference)

1.00 (Reference)

ICSI

0.79 (0.31–2.06)

0.633

1.20 (0.48–3.02)

0.694

No. of oocytes retrieved

0.71 (0.45–1.11)

0.130

0.64 (0.37–1.11)

0.114

No. of MII oocytes

1.30 (0.75–2.26)

0.346

1.38 (0.67–2.86)

0.384

No. of 2PN embryos

1.25 (0.79–1.98)

0.332

1.08 (0.66–1.78)

0.747

No. of available embryos

2.28 (1.37–3.78)

0.001*

2.51 (1.48–4.23)

< 0.001*