Table 3 Embryo parameters analysed in the implanted (Group A) and non-implanted (Group B) advanced blastocysts
Group A n = 93 | Group B n = 110 | Statistics | |
|---|---|---|---|
Number of blastomeres on day 2 | |||
∘ < 4 cells | 2 (2.2%) | 4 (3.6%) | NS |
∘ 4 cells | 80 (86.0%) | 95 (86.4%) | |
∘ > 4 cells | 11 (11.8%) | 11 (10.0%) | |
Number of blastomeres on day 3 | |||
∘ <8 cells | 3 (3.2%) | 7 (6.4%) | NS |
∘ 8 cells | 63 (67.7%) | 67 (60.9%) | |
∘ >8 cells | 27 (29.0%) | 36 (32.7%) | |
Fragmentation rate on day 3 | |||
∘ <10% | 82 (88.2%) | 84 (76.4%) | 0.03 |
∘ ≥ 10–50% | 11 (11.8%) | 26 (23.6%) | |
Embryo stage on day 4 | |||
∘ Not compacted | 3 (3.2%) | 4 (3.6%) | NS |
∘ Compacted | 68 (73.1%) | 73 (66.4%) | |
∘ Early blastocysts | 22 (23.7%) | 33 (30.0%) | |
Cleavage pattern: 4 cells on day 2 vs. number of cells on day 3 | n = 80 | n = 95 | |
∘ 4 cells – < 8 cells | 3 (3.7%) | 5 (5.2%) | NS |
∘ 4 cells – 8 cells | 58 (72.5%) | 63 (66.3%) | |
∘ 4 cells – > 8 cells | 19 (23.7%) | 27 (28.4%) | |
Cleavage pattern: 8 cells on day 3 vs. number of cells on day 2 | n = 63 | n = 67 | |
∘ 8 cells – < 4 cells | 2 (3.2%) | 2 (3.0%) | NS |
∘ 8 cells 4 | 58 (92.1%) | 63 (94%) | |
∘ 8 cells – > 4 cells | 3 (4.8%) | 2 (3.0%) |