Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,288 questions · 3,354 findings · 516 reviews · Headline outcomes only

No studies found 720 · 21.5%GRADE not reported 164 · 4.9%Very low 950 · 28.3%Low 932 · 27.8%Moderate 434 · 12.9%High 154 · 4.6%

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Live birth rate · Patients with live birth rate

Embryo culture with low oxygen concentration probably leads to higher live birth rate compared with embryo culture with atmospheric oxygen concentration (moderate certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Ongoing pregnancy · Patients with ongoing pregnancy

Embryo culture with low oxygen concentration probably leads to higher ongoing pregnancy rate compared with embryo culture with atmospheric oxygen concentration (moderate certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Clinical pregnancy rate · Patients with clinical pregnancy rate

Embryo culture with low oxygen concentration probably leads to higher clinical pregnancy rate compared with embryo culture with atmospheric oxygen concentration (moderate certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Multiple pregnancy rate · Patients with multiple pregnancy rate

Embryo culture with low oxygen concentration showed no clear difference in multiple‐pregnancy rate compared with embryo culture with atmospheric oxygen concentration (low certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Miscarriage · patients with miscarriage rate

Embryo culture with low oxygen concentration showed no clear difference in miscarriage rate compared with embryo culture with atmospheric oxygen concentration (low certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Congenital abnormalities · patients with congenital abnormalities

It is very uncertain whether embryo culture with low oxygen concentration changes congenital abnormalities compared with embryo culture with atmospheric oxygen concentration (very low certainty).

1 finding from 1 review