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Table 3 Pregnancy outcomes of immediate FETa and delayed FETb groups in the entire cohort and propensity score-matched cohort

From: Effects of immediate versus delayed frozen embryo transfer in high responder patients undergoing freeze-all cycles

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
  1. Abbreviations: FET, frozen embryo transfer
  2. 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 (%)