Table 2 The number of oocytes and blastocysts obtained as well as the euploidy rate per embryo following COH treatments
Embryos from |  | All patients |  |  | Age < 38 |  |  | Age ≥ 38 |  |
|---|---|---|---|---|---|---|---|---|---|
| Â | PPOS | Antagonist | P Value | PPOS | Antagonist | P Value | PPOS | Antagonist | P Value |
Total No. of retrieved oocytes (N) | 398 | 1129 | N/A | 216 | 580 | N/A | 182 | 549 | N/A |
Total No. of injected MII oocytes (N) | 364 | 890 | N/A | 208 | 455 | N/A | 156 | 435 | N/A |
No. of 2PN (N) | 273 | 645 | N/A | 156 | 333 | N/A | 117 | 312 | N/A |
No. of blastocysts (N) | 110 | 291 | N/A | 73 | 156 | N/A | 37 | 135 | N/A |
No. euploid blastocysts (N) | 24 | 96 | N/A | 22 | 60 | N/A | 2 | 36 | N/A |
Euploid blastocyst per injected MII (%) | 6.5% | 10.7% | N/A | 10.5% | 13.1% | N/A | 1.3% | 8.3% | N/A |
Fertilization rate per MI oocytes (%) | 273/364 (75%) | 645/890 (72.5%) | 0.605 | 156/208 (75.0%) | 333/455 (73.2%) | 0.622 | 117/156 (75.0%) | 312/435 (71.7%) | 0.431 |
Euploidy rate per blastocysts (%) | 24/110 (26.8%) | 96/291 (33.0%) | 0.029 | 22/73 (30.1%) | 60/156 (38.5%) | 0.221 | 2/37 (5.4%) | 36/135 (26.7%) | 0.006 |