| Table 2. Blastocyst formation for regrouped 0 days off-gassing and any off-gassing on day 4 and day 5. | |||
| BLASTOCYST RATE | Off-gassing group | ||
|---|---|---|---|
| Any day | 0 day | ||
| Blastocyst Formation rate on day 4 (%) | 75.6 | 77.6 | |
| Blastocyst Formation rate on Day 5 (%) | 82.2 | 79.6 | |
The mean difference is significant at the 0.05 level.