Independent covariates | Covariate strata | Crude OR (95% CI) | P-value | Adjusted OR (95% CI) | P-value |
---|---|---|---|---|---|
Age | 0.93 (0.91–0.96) | < 0.0001 | 0.99 (0.96–1.02) | 0.5496 | |
BMI | 0.92 (0.88–0.96) | < 0.0001 | 0.91 (0.87–0.95) | < 0.0001 | |
AFC | 1.10 (1.08–1.11) | < 0.0001 | 1.08 (1.06–1.10) | < 0.0001 | |
No. retrieved oocytes | |||||
Group 1 to Group 2 | 25.94 (9.64–69.8) | < 0.0001 | 15.06 (5.57–40.76) | < 0.0001 | |
Group 1 to Group 3 | 42.79 (15.77–116.12) | < 0.0001 | 21.24 (7.65–58.96) | < 0.0001 | |
ET strategy | |||||
All embryos frozen | 1 | 1 | |||
1 D3 embryo transferred | 0.29 (0.14–0.57) | 0.0012 | 0.60 (0.28–1.29) | 0.1020 | |
1 blastocyst (Day 5/6 embryo) transferred | 1.08 (0.70–1.67) | 0.1246 | 0.82 (0.51–1.32) | 0.3396 | |
2 D3 embryos transferred | 0.85 (0.65–1.11) | 0.5886 | 1.32 (0.95–1.83) | 0.1812 | |
2 blastocysts transferred | 1.04 (0.25–4.32) | 0.5998 | 1.78 (0.42–7.55) | 0.3529 |