3 h group | 20 h group | P | |
---|---|---|---|
Cleavage rate, n (%) | 988(86.7) | 969(85.3) | 0.32 |
Available embryo rate, n (%) | 705(61.9) | 718(63.2) | 0.52 |
Optimal embryo rate, n (%) | 524(78) | 503(71.9) | 0.01 |
Blastocyst formation rate, n (%) | 323(63.7) | 342(61.5) | 0.46 |
Optimal blastocyte rate, n (%) | 138(42.7) | 140(40.9) | 0.64 |
Frozen blastocyst rate, n (%) | 211(65.3) | 225(65.8) | 0.90 |