| Table 4. Influence of the morphological quality of the blastocyst on the risk of embryonic aneuploidy | ||||||
| Type | Euploid Group % (N) | Aneuploid Group % (N) | p* | OR | p | |
|---|---|---|---|---|---|---|
| Degree of expansion | 2 | 45.4% (124) | 54.6% (149) | 0.215 | ||
| 3 | 49.3% (69) | 50.7% (71) | ||||
| 4 | 77.7% (7) | 22.2% (2) | ||||
| Trophectoderm | A | 63.5% (54) | 36.5% (31) | <0.001 | 2.5 (1.5-4.1)† 4.0 (2.1-7.4)‡ |
<0.001† <0.001‡ |
| B | 48.9% (116) | 51.1% (121) | ||||
| C | 30.3% (30) | 69.7% (69) | ||||
| Inner cell mass | A | 54.1% (72) | 45.9% (61) | 0.117 | 1.7 (1.1-3.0)‡ | 0.048‡ |
| B | 45.9% (95) | 54.1% (112) | ||||
| C | 40.2% (33) | 59.8% (49) | ||||
| Biopsy day | D5 | 51.7% (76) | 48.3% (71) | 0.247 | ||
| D6 | 45.1% (123) | 54.9% (150) | ||||
*Chi-squared test
†Risk of aneuploidy: (TYPE A + TYPE B) x (TYPE C)
‡Risk of aneuploidy: (TYPE A) x (TYPE C)