Number of frozen blastocysts | ||||
---|---|---|---|---|
0 | 1–2 | ≥ 3 | P | |
Live birth rate (%) | 36.0 (562/1561) | 46.1 (1357/2943) | 47.6 a (1987/4172) | < 0.001 |
Adjusted b live birth rate | 0.35 | 0.47 | 0.50 | < 0.001C |
Clinical pregnancy rate (%) | 47.0 (733/1561) | 59.2 (1743/2943) | 65.1 (2716/4172) | < 0.001 |
Adjusted b clinical pregnancy rate | 0.47 | 0.59 | 0.66 | < 0.001C |
Implantation rate (%) | 35.5 (854/2409) | 47.6 (2110/4430) | 56.0 (3131/5588) | < 0.001 |
Miscarriage rate (%) | 23.3 a (171/733) | 22.1 (386/1743) | 26.8 (729/2716) | 0.001 |