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Univariate analysis for clinical outcomes in relation to the day of vitrification
| Day 5 (N = 178) | Day 6 (N = 149) | p value | |||
|---|---|---|---|---|---|
| Not pregnant | 81 | 46% | 101 | 68% | < 0.001 |
| Biochemical pregnancy | 21 | 12% | 13 | 9% | 0.44 |
| Clinical pregnancy | 76 | 43% | 35 | 23% | < 0.001 |
| Extra-uterine pregnancy | 1 | < 1% | 1 | < 1% | |
| Miscarriage | 14 | 8% | 9 | 6% | 0.42 |
| Live birth | 61 | 34% | 24 | 16% | < 0.001 |
