| Oocytes retrieved [Median (Range)] |
5 (3-8) |
7 (4-11) |
8 (4-12) |
<0.001 |
| Fertilization rate (%)[Median (Range)] |
78.3 (75.9-80.6) |
72.5 (71.6-73.4) |
71.7 (70.6-72.8) |
0.161 |
| Cleavage rate (%)[Median (Range)] |
95.2 (93.7-96.5) |
95.4 (94.8-98.9) |
94.4 (93.7-95.1) |
0.935 |
| Grade 1 embryos µ±SD |
3.05 (2.18) |
3.91 (3.00) |
3.99 (3.22) |
0.0006 |
| Embryos transferred µ±SD |
2.29 (1.19) |
2.49 (1.17) |
2.37 (1.35) |
0.042 |
| Embryos vitrified µ±SD |
0.79 (1.78) |
1.19 (2.49) |
1.38 (2.61) |
<0.001 |
| Embryo utilization rate (%)[Median (Range)] |
65.6 (62.4-68.6) |
62.7 (61.5-63.9) |
60.9 (59.4-62.3) |
0.370 |
| Pregnancy rate (%)[Median (Range)] |
30.0 (24.1-36.5) |
28.5 (25.9-31.2) |
20.7 (17.9-23.7) |
<0.001 |
| Live Birth Rate (%) |
14.4 |
21.6 |
21 |
<0.001 |