Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,510 questions · 2,653 findings · 194 reviews · Gynaecology and Fertility

No studies found 531 · 20%GRADE not reported 76 · 2.9%Very low 826 · 31.1%Low 855 · 32.2%Moderate 341 · 12.9%High 24 · 0.9%

Repeated single embryo transfer (mixed policies) vs multiple embryo transfer

Cumulative live birth · transfer following in vitro fertilisation or intracytoplasmic sperm injection

Repeated single embryo transfer (mixed policies) showed no clear difference in cumulative live birth compared with multiple embryo transfer (low certainty).

1 finding from 1 review

Repeated single embryo transfer (mixed policies) vs multiple embryo transfer

Multiple pregnancy · transfer following in vitro fertilisation or intracytoplasmic sperm injection

Repeated single embryo transfer (mixed policies) probably leads to lower multiple pregnancy compared with multiple embryo transfer (moderate certainty).

1 finding from 1 review

Repeated single embryo transfer (mixed policies) vs multiple embryo transfer

Clinical pregnancy rate · transfer following in vitro fertilisation or intracytoplasmic sperm injection

Repeated single embryo transfer (mixed policies) showed no clear difference in clinical pregnancy rate compared with multiple embryo transfer (low certainty).

1 finding from 1 review

Repeated single embryo transfer (mixed policies) vs multiple embryo transfer

Miscarriage · transfer following in vitro fertilisation or intracytoplasmic sperm injection

Repeated single embryo transfer (mixed policies) showed no clear difference in miscarriage rate compared with multiple embryo transfer (low certainty).

1 finding from 1 review

Postsurgical medical therapy vs Placebo or no active treatment

Disease recurrence ≤ 12 months (EEC stage) · women having endometriosis surgery

It is very uncertain whether postsurgical medical therapy changes disease recurrence ≤ 12 months (EEC stage) compared with placebo or no medical therapy (very low certainty).

1 finding from 1 review

Presurgical medical therapy vs postsurgical medical therapy

Pain recurrence (dichotomous) Pain recurrence ≤ 12 months · women having endometriosis surgery

Presurgical medical therapy showed no clear difference in pain recurrence (dichotomous) Pain recurrence ≤ 12 months compared with postsurgical medical therapy (low certainty).

1 finding from 1 review