hCG trigger | Dual trigger | p value | N | |
---|---|---|---|---|
N = 337 | N = 397 | |||
Number of cycles without oocytes retrieved | 22/337 (6.53%) | 18/397 (4.53%) | 0.236b | 734 |
No. of retrieved oocytes | 2.39 ± 1.90 | 3.60 ± 2.73 | < 0.001a | 734 |
Fertilization method | 0.011b | 691 | ||
IVF | 247 (78.9%) | 266 (70.4%) | ||
ICSI | 66 (21.1%) | 112 (29.6%) | ||
No. of fertilized oocytes | 1.94 ± 1.46 | 2.55 ± 1.82 | < 0.001a | 694 |
No. of 2PN embryos | 1.52 ± 1.34 | 2.02 ± 1.60 | < 0.001a | 694 |
Fertilization rate (%) | ||||
IVF | 70.8 ± 37.7 | 73.9 ± 34.8 | 0.340a | 513 |
ICSI | 73.2 ± 42.2 | 78.4 ± 34.8 | 0.401a | 178 |
Cleavage rate of 2PN embryos | 70.0 ± 39.7 | 74.8 ± 35.5 | 0.103a | 683 |
No. of transferable embryos | 0.95 ± 0.98 | 1.22 ± 1.13 | 0.001a | 694 |
Embryo developmental stage at transfer | 0.902c | 305 | ||
D3 | 123 (96.9%) | 174 (97.8%) | ||
D5 | 4 (3.1%) | 4 (2.2%) |