Table 3 Comparison of clinical parameters between the oocyte retrieval difficulty group and the control group by IVF or ICSI
Difficulty group | Control | P Value | |
|---|---|---|---|
Insemination methods | |||
IVF | |||
No. of cycles | 98 | 1180 | |
Age---yr | 29 ± 3.06 | 29 ± 3.06 | 0.99 |
No. of retrieved oocytes | 9.49 ± 4.70 | 12.08 ± 5.29 | P < 0.001 |
2PN-fertilization rate | 655/930 (70.4%) | 10,584/14258 (74.2%) | 0.01 |
Day3 good-quality embryo rate | 346/634 (54.6%) | 5740/10245 (56.0%) | 0.48 |
Blastulation rate | 177/342 (51.8%) | 3269/5907 (55.3%) | 0.20 |
Blastocyst utilization rate | 122/342 (35.7%) | 2297/5907 (38.9%) | 0.25 |
Day5 blastocyst utilization rate | 86/342 (25.1%) | 1725/5907 (29.2%) | 0.11 |
Day 6 blastocyst utilization rate | 36/256 (14.1%) | 572/4182 (13.7%) | 0.85 |
ICSI | |||
No. of cycles | 35 | 401 | |
Age---yr | 28.94 ± 3.40 | 28.90 ± 3.20 | 0.93 |
No. of retrieved oocytes | 7.94 ± 4.35 | 12.25 ± 5.20 | P < 0.001 |
No. of MII stage oocytes | 5.31 ± 4.34 | 8.25 ± 5.14 | 0.001 |
2PN-fertilization rate | 145/186 (78%) | 2706/3307 (81.8%) | 0.19 |
Day 3 good-quality embryo rate | 62/140 (44.3%) | 1531/2619 (58.5%) | 0.001 |
Blastulation rate | 26/81 (32.1%) | 781/1757 (44.5%) | 0.03 |
Blastocyst utilization rate | 13/81 (16.0%) | 541/1757 (30.8%) | 0.005 |
Day 5 blastocyst utilization rate | 4/81 (4.9%) | 279/1757 (15.9%) | 0.004 |
Day6 blastocyst utilization rate | 9/77 (11.7%) | 262/1216 (21.5%) | 0.043 |