Table 2.
Comparison of patient and cycle characteristics when embryo transfer was performed at the cleavage stage or at the blastocyst stage
Variable | Cleavage stage embryo transfer (n = 203) | Blastocyst stage embryo transfer (n = 922) | p |
---|---|---|---|
Female Age (years) | 32.01 ± 4.54 | 31.08 ± 4.23 | 0.182 |
Male age (years) | 36.55 ± 7.08 | 36.82 ± 6.73 | 0.459 |
FSH dose (IU) | 2,221 ± 577 | 2,282 ± 995 | 0.486 |
No. of follicles | 18.03 ± 8.02 | 21.5 ± 11.03 | 0.326 |
No. of oocytes retrieved | 15.4 ± 3.11 | 18.9 ± 6.03 | 0.541 |
No. of MII oocytes | 10.05 ± 4.21 | 13.31 ± 4.05 | 0.3221 |
Fertilisation Rate | 79.3 ± 13.8 | 80.3 ± 13. | 0.593 |
Endometrial thickness (mm) | 10.64 ± 2.38 | 10.77 ± 1.96 | 0.755 |
Transferred embryos | 2.4 ± 0.53 | 2.1 ± 0.59 | <0.001 |
MII: Metaphase II