Table 5 Morphological characteristics of day 3 embryos cultured in both types of culture media (Chi-square test)
From: Early embryo development in a sequential versus single medium: a randomized study
Characteristics day 3 | GROUP A (n = 419) | GROUP B (n = 583) | p-value |
|---|---|---|---|
Number of blastomeres | Â | Â | Â |
≤ 5 | 203 (48%) | 181 (31%) | < 0.0001 |
6 | 57 (14%) | 97 (17%) | NS |
7 | 67 (16%) | 126 (22%) | 0.026 |
8 | 73 (17%) | 129 (22%) | NS |
9 | 14 (3%) | 32 (5%) | NS |
≥ 10 | 5 (1%) | 18 (3%) | 0.0483 |
Degree of fragmentation | Â | Â | Â |
0 | 52 (12%) | 109 (19%) | 0.0075 |
1 | 93 (22%) | 130 (22%) | NS |
2 | 141 (34%) | 177 (30%) | NS |
3 | 105 (25%) | 137 (23%) | NS |
4 | 28 (7%) | 30 (5%) | NS |
Size of blastomeres (equal) | 169 (40%) | 177 (30%) | 0.0011 |
Position of fragments (local) | 130 (40%) | 179 (42%) | NS |
Size of fragments (small) | 219 (68%) | 294 (68%) | NS |
Good quality embryo | 372 (89%) | 526 (90%) | NS |
Utilization rate | 206 (49%) | 326 (56%) | 0.0346 |