Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

121 questions · 128 findings · 51 reviews · Gynaecology and Fertility

No studies found 32 · 25%GRADE not reported 0 · 0%Very low 40 · 31.3%Low 45 · 35.2%Moderate 10 · 7.8%High 1 · 0.8%

Myo‐inositol vs clomiphene

Adverse event ‐ multiple pregnancy · subfertile women with polycystic ovary syndrome

It is very uncertain whether myo‐inositol changes adverse event ‐ multiple pregnancy compared with an ovulation induction agent (clomiphene) (very low certainty).

1 finding from 1 review

Summary of findings table ‐ Progestogens vs placebo or no pretreatment

Multiple pregnancy rate · ovarian stimulation protocols for women undergoing ART

The review found no eligible studies for this question.

2 findings from 1 review

Oestrogen vs no pretreatment

Multiple pregnancy rate · ovarian stimulation protocols for women undergoing ART

The review found no eligible studies for this question.

2 findings from 1 review

Combined oral contraceptive pill vs no pretreatment

Multiple pregnancy rate · women undergoing assisted reproduction

Combined oral contraceptive pill showed no clear difference in multiple pregnancy rate (COCP + Ant vs Ant) compared with no pretreatment (low certainty).

2 findings from 1 review