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Comparison of human embryo development competence on the second day (day 2) after fertilization between different oxygen concentration groups
| 20% O2 | 5% O2 | P-value | |
|---|---|---|---|
| ≤ 2 cell | 33 (8.85) | 40 (10.99) | NS |
| 3 cell | 39 (10.46) | 25 (6.87) | NS |
| 4 cell | 225 (60.32) | 227 (62.36) | NS |
| ≥ 5 cell | 76 (20.38) | 71 (19.51) | NS |
NS = not statistically significant.
