Table 3.
Pregnancy outcomes of immediate FETa and delayed FETb groups in the entire cohort and propensity score-matched cohort
| Pregnancy outcomes | Entire cohort (n = 2128) |
P-value | Propensity score-matched cohort (n = 1366) |
P-value | ||
|---|---|---|---|---|---|---|
| Immediate FETa | Delayed FETb | Immediate FETa | Delayed FETb | |||
| (n = 1130) | (n = 998) | (n = 683) | (n = 683) | |||
| Clinical pregnancy | 61% | 63.4% | 0.244 | 413 (60.5) | 434 (63.5) | 0.242 |
| Spontaneous abortion | 12.6% | 10.1% | 0.065 | 79 (11.6) | 84 (12.3) | 0.676 |
| Live birth | 49.9% | 49.2% | 0.743 | 328 (48.0) | 337 (49.3) | 0.626 |
Abbreviations: FET, frozen embryo transfer
aImmediate FET and bDelayed FET means FET took place either within the first menstrual cycle following oocyte retrieval or afterwards. Data are presented as number (%)