Fresh showed no clear difference in live birth rate: cumulatively compared with frozen embryo transfer (cumulatively) (moderate certainty).
Fresh may leads to higher large for gestational age (birth weight above 90th percentile):… compared with frozen embryo transfers (low certainty).
Fresh may leads to lower small for gestational age (birth weight below 10th percentile):… compared with frozen embryo transfers (low certainty).
It is very uncertain whether fresh changes small for gestational age (birth weight below 10th percentile):… compared with frozen embryo transfers (very low certainty).
Fresh may leads to lower OHSS: per cycle with ovarian hyperstimulation compared with frozen embryo transfer (cumulatively) (low certainty).
Fresh showed no clear difference in ongoing pregnancy rate: cumulatively compared with frozen embryo transfer (cumulatively) (moderate certainty).
It is very uncertain whether fresh changes miscarriage rate: cumulatively compared with frozen embryo transfer (cumulatively) (very low certainty).
It is very uncertain whether fresh changes multiple pregnancy rate: cumulatively compared with frozen embryo transfer (cumulatively) (very low certainty).
The review found no eligible studies for this question.
Fresh showed no clear difference in hypertensive disorders of pregnancy: cumulatively compared with frozen embryo transfers (low certainty).
Fresh may leads to higher hypertensive disorders of pregnancy: after first ET compared with frozen embryo transfers (low certainty).
Fresh showed no clear difference in large for gestational age (birth weight above 90th percentile):… compared with frozen embryo transfers (low certainty).