| B | ES | P | OR | 95% CI | |
---|---|---|---|---|---|---|
Lower | Upper | |||||
Constant | Â | Â | Â | Â | Â | Â |
 Clinical pregnancy | −3.845 | 0.374 | <0.001 | 0.021 |  |  |
 Delivery | −4.084 | 0.417 | <0.001 | 0.017 |  |  |
Maternal age | Â | Â | Â | Â | Â | Â |
 Clinical pregnancy | 1.263 | 0.290 | <0.001 | 3.535 | 2.002 | 6.244 |
 Delivery | 1.282 | 0.326 | <0.001 | 3.604 | 1.904 | 6.821 |
Insemination technique | Â | Â | Â | Â | Â | Â |
 Clinical pregnancy | 0.021 | 0.304 | 0.946 | 1.021 | 0.562 | 1.854 |
 Delivery | 0.074 | 0.341 | 0.828 | 1.077 | 0.552 | 2.099 |
Pronuclear morphology | Â | Â | Â | Â | Â | Â |
 Clinical pregnancy | 0.481 | 0.320 | 0.132 | 1.618 | 0.865 | 3.029 |
 Delivery | 0.468 | 0.359 | 0.192 | 1.597 | 0.791 | 3.227 |
Embryo quality | Â | Â | Â | Â | Â | Â |
 Clinical pregnancy | 1.078 | 0.353 | 0.002 | 2.938 | 1.470 | 5.871 |
 Delivery | 0.974 | 0.391 | 0.013 | 2.648 | 1.231 | 5.698 |