Findings

What do systematic reviews say?

3,971 questions · 9,849 findings · 853 reviews

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No studies found 1,150 · 11.7%GRADE not reported 3,387 · 34.4%Very low 1,963 · 19.9%Low 1,809 · 18.4%Moderate 1,207 · 12.3%High 333 · 3.4%

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GnRH agonists vs GnRH antagonists

Clinical pregnancy rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

GnRH agonists probably leads to lower clinical pregnancy rate compared with gnRH antagonists (moderate certainty).

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
OR 0.62 [0.42, 0.9]
1 study · 473 participants
Moderate

GnRH agonists vs GnRH antagonists

Miscarriage · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

GnRH agonists showed no clear difference in miscarriage rate compared with gnRH antagonists (low certainty).

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
OR 0.75 [0.38, 1.49]
1 study · 473 participants
Low

GnRH agonists vs GnRH antagonists

Multiple pregnancy rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

GnRH agonists showed no clear difference in multiple pregnancy rate compared with gnRH antagonists (low certainty).

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
OR 0.69 [0.45, 1.07]
1 study · 473 participants
Low

GnRH agonists vs GnRH antagonists

Cycle cancellation rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

The review found no eligible studies for this question.

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

GnRH agonists vs GnRH antagonists

Other adverse effects · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

The review found no eligible studies for this question.

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Stimulated cycle vs programmed

Cycle cancellation rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

The review found no eligible studies for this question.

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Aspirin vs control

Live birth rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

It is very uncertain whether aspirin changes live birth rate compared with control (very low certainty).

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
OR 6 [1.48, 24.3]
1 study · 60 participants
Very low

Aspirin vs control

Clinical pregnancy rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

It is very uncertain whether aspirin changes clinical pregnancy rate compared with control (very low certainty).

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
OR 3.33 [1, 11.14]
1 study · 60 participants
Very low

Aspirin vs control

Miscarriage · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

The review found no eligible studies for this question.

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Aspirin vs control

Multiple pregnancy rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

The review found no eligible studies for this question.

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Aspirin vs control

Cycle cancellation rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

The review found no eligible studies for this question.

1 finding from 1 review

Endometrial preparation for women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found