Table 2.
Independent predictors of live birth (LB) following IVF. Associations expressed as odds ratio (OR) and 95 % confidence interval (CI)
| Variables | Unadjusted OR (95 % CI) |
P-value | Adjusted OR (95 % CI) |
P-value |
|---|---|---|---|---|
| Age (years) | 0.9 (0.88–0.95) | <0.01 | 0.9 (0.82–0.92) | <0.0001 |
| BMI (kg/m2) | 1.0 (0.97–1.04) | 0.82 | 1.0 (0.95–1.03) | 0.71 |
| Blood type B vs. A | 1.5 (0.95–2.45) | 0.08 | 2.2 (1.15–4.11) | 0.02 |
| Blood type AB vs. A | 1.3 (0.60–2.86) | 0.5 | 2.0 (0.69–5.6) | 0.21 |
| Blood type O vs. A | 0.9 (0.64–1.32) | 0.7 | 1.2 (0.74–2.03) | 0.43 |
| Endometrial thickness (mm) | 1.1 (1.02–1.10) | <0.01 | 1.0 (0.92–1.04) | 0.46 |
| Gonadotropin dose (IU) | 1.0 (0.99–0.99) | <0.01 | 1.0 (0.99–1.00) | 0.33 |
| # Embryos transferred | 1.3 (1.14–1.57) | <0.01 | 1.9 (1.46–2.42) | <0.01 |
| Blastocyst transfer (Yes) | 1.9 (1.22–3.01) | <0.01 | 2.1 (1.03–3.85) | 0.04 |
| First attempt at IVF vs. repeat | 1.43 (0.99–2.0) | 0.05 | 1.5 (0.91–2.36) | 0.12 |
Model Sensitivity: 73 %
p-values that are significant at < 0.05 are bolded