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Table 8 Pregnancy outcomes for blastocysts after slow freezing or vitrification (modified from 11 and 8 ).
| Slow freezing | Vitrification | |
|---|---|---|
| * p = significant, ** ARR: 1.38, 95% CI: 1.32–1.45, *** ARR: 1.41, 95% CI: 1.34–1.49 | ||
| Rate of transferred blastocysts per cryopreservation/thawing | 71.4% | 84.5%* |
| Rate of clinical pregnancies per transferred blastocyst | 23.8% | 32.7%** |
| Rate of live births per transferred blastocyst | 17.7% | 24.8%*** |
