Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

10 questions · 10 findings · 2 reviews · Gynaecology and Fertility

No studies found 9 · 90%GRADE not reported 0 · 0%Very low 1 · 10%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Starting administration of the progestogen earlier vs starting administration of the progestogen later

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

Nifedipine vs placebo

Bothersome adverse effects · primary dysmenorrhoea

It is very uncertain whether nifedipine changes bothersome adverse effects compared with placebo (very low certainty).

1 finding from 1 review