Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,703 questions · 15,007 findings · 1,416 reviews

No studies found 2,881 · 19.2%GRADE not reported 1,551 · 10.3%Very low 3,111 · 20.7%Low 3,881 · 25.9%Moderate 2,669 · 17.8%High 914 · 6.1%

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Progesterone vs no treatment or placebo (route of progesterone administration)

Live birth or ongoing pregnancy · women trying to conceive by intrauterine insemination

Progesterone showed no clear difference in live birth/ongoing pregnancy rate compared with no treatment or placebo (route of progesterone administration) (low certainty).

1 finding from 1 review

Progesterone vs no treatment or placebo (route of progesterone administration)

Miscarriage per clinical pregnancy · women trying to conceive by intrauterine insemination

Progesterone showed no clear difference in miscarriage per clinical pregnancy compared with no treatment or placebo (route of progesterone administration) (low certainty).

1 finding from 1 review

Progesterone vs no treatment or placebo (route of progesterone administration)

Clinical pregnancy · women trying to conceive by intrauterine insemination

Progesterone may leads to higher clinical pregnancy per woman compared with no treatment or placebo (route of progesterone administration) (low certainty).

1 finding from 1 review