Table 2.
The mean values and Standard Deviation (SD) of age, basal FSH, reason of infertility, number of COCs, number of MII oocytes, fertilization and blastulation rates, and post-thawing survival rate of the blastocyss of the groups, characterized by the statistical significance: Group A (1-2 blastocysts frozen), Group B (2-3 blastocysts frozen), Group C (5-6 blastocysts frozen) and Group D (≥7 blastocysts frozen).
| Group A (1-2 Blastos Frozen) (n = 50) | Group B (3-4 Blastos Frozen) (n = 46) | Group C (5-6 Blastos Frozen) (n = 48) | Group D (≥7 Blastos Frozen) (n = 100) | s.sb (p-value) | ||
|---|---|---|---|---|---|---|
| Agea mean (±SD) | 31.84 (±5.21) | 34.48 (±3.42) | 33.96 (±3.69) | 32.12 (±3.66) | P <0.05 | |
| Basal FSH mean (mIU/ml) | 7.1 | 6.9 | 6.7 | 6.1 | n.s. | |
| Infertility reason | Male factor | 40% | 42% | 44% | 45% | n.s. |
| Female factor | 39% | 36% | 36% | 32% | n.s. | |
| Both | 21% | 22% | 20% | 23% | n.s. | |
| COCs mean (range) | 9.80 (5–24) | 11.61 (5–21) | 11.96 (6–21) | 18.66 (7–58) | P < 0.05 | |
| MII mean (±SD) | 6.56 (±3.56) | 8.52 (±2.84) | 9.52 (±2.91) | 14.66 (±5.18) | P < 0.05 | |
| Fertilization rate mean (±SD) | 81.74% (15.66%) | 79.57% (±16.04%) | 85.46% (±10.35%) | 86.94% (±11.39%) | n.s | |
| Blastulation rate mean (±SD) | 48.22% (±26.1%) | 59.24% (±18.67%) | 72.95% (±17.95) | 79.55% (±20.58) | P < 0.05 | |
| Post-Thawing Survival rate mean (±SD) | 100% (±0.1%) | 100% (±0.1%) | 100% (±0.1%) | 100% (±0.1%) | n.s | |
a
Age is expressed in years.
b
Statistical significance.