Table 4 Effects of laser quarter-thinning and full-thickness opening on the rate of blastulation, blastocyst hatching, and completely hatched blastocyst at 24, 48 and 72 hours post assisted hatching, compared with non-manipulated controls in experiment 3
| Â | Control | Full-thickness | Thinning | P |
|---|---|---|---|---|
(n=180) | (n=180) | (n=180) | ||
Blastulation rate | 176 (97.8%) | 173 (96.1%) | 178 (98.9%) | 0.260a |
Hatching rate | 97 (55.1%) | 167 (96.5%) | 167 (93.8%) | 0.000b |
Hatched rate | 75 (42.6%) | 106 (61.3%) | 69 (38.8%) | 0.000c |