Table 2 Comparison of the first embryo transfer cycle outcomes
IVF | ICSI | P-value | |
|---|---|---|---|
No. of patients | 3613 | 351 | |
Cycles of embryo transfer, n (%) | |||
Fresh | 2175 (60.20) | 198 (56.41) | 0.17 |
Frozen-thawed | 1438 (39.80) | 153 (43.59) | |
No. of embryos transferred | 1.39 ± 0.49 | 1.45 ± 0.50 | 0.03 |
1, n (%) | 2211 (61.20) | 194 (55.27) | 0.08 |
2 | 1400 (38.75) | 157 (44.73) | |
3 | 2 (0.06) | 0 | |
Embryo stage, n (%) | |||
Cleavage-stage | 1640 (45.39) | 198 (56.41) | < 0.01 |
Blastocyst-stage | 1973 (54.61) | 153 (43.59) | |
Clinical pregnancy rate, n (%) | 2250 (62.28) | 198 (56.41) | 0.03 |
Live birth rate, n (%) | 1729 (47.85) | 151 (43.02) | 0.08 |
Plurality at birth, n (% per cycle) | |||
Singleton | 1468 (40.63) | 126 (35.90) | 0.20 |
Twins | 261 (7.22) | 25 (7.12) |