Findings

What do systematic reviews say?

7 questions · 7 findings · 1 reviews

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 3 · 42.9%Low 4 · 57.1%Moderate 0 · 0%High 0 · 0%

Oral progesterone vs vaginal progesterone

Clinical pregnancy rate · women trying to conceive by intrauterine insemination

It is very uncertain whether oral progesterone changes clinical pregnancy rate compared with vaginal progesterone (very low certainty).

1 finding from 1 review

Luteal phase support for women trying to conceive by intrauterine insemination or sexual intercourse 2022 · Cochrane Headline outcomes only
RR 1.16 [0.69, 1.96]
1 study · 150 participants
Very low

Oral progesterone vs vaginal progesterone

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

It is very uncertain whether oral progesterone changes miscarriage rate per clinical pregnancy compared with vaginal progesterone (very low certainty).

1 finding from 1 review

Luteal phase support for women trying to conceive by intrauterine insemination or sexual intercourse 2022 · Cochrane Headline outcomes only
RR 0.58 [0.11, 3.09]
1 study · 41 participants
Very low

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

Clinical pregnancy per woman ‐ oral route · women trying to conceive by intrauterine insemination

It is very uncertain whether progesterone changes clinical pregnancy per woman ‐ oral route compared with no treatment or placebo (route of progesterone administration) (very low certainty).

1 finding from 1 review

Luteal phase support for women trying to conceive by intrauterine insemination or sexual intercourse 2022 · Cochrane Headline outcomes only
RR 0.67 [0.4, 1.13]
1 study · 99 participants
Very low

Progesterone vs placebo/no treatment

Clinical pregnancy · women with oral (clomiphene citrate or letrozole) stimulation

Progesterone may leads to higher clinical pregnancy compared with placebo/no treatment (low certainty).

1 finding from 1 review

Luteal phase support for women trying to conceive by intrauterine insemination or sexual intercourse 2022 · Cochrane Headline outcomes only
RR 1.44 [1.04, 1.98]
6 studies · 1073 participants
Low

Progesterone vs placebo/no treatment

Clinical pregnancy rate · women with gonadotropin plus oral (clomiphene citrate or letrozole) stimulation

Progesterone may leads to higher clinical pregnancy rate compared with placebo/no treatment (low certainty).

1 finding from 1 review

Luteal phase support for women trying to conceive by intrauterine insemination or sexual intercourse 2022 · Cochrane Headline outcomes only
RR 1.4 [1.03, 1.9]
4 studies · 733 participants
Low

Progesterone vs placebo/no treatment

Miscarriage per clinical pregnancy · women with gonadotropin plus oral (clomiphene citrate or letrozole) stimulation

Progesterone showed no clear difference in miscarriage rate per clinical pregnancy compared with placebo/no treatment (low certainty).

1 finding from 1 review

Luteal phase support for women trying to conceive by intrauterine insemination or sexual intercourse 2022 · Cochrane Headline outcomes only
RR 0.67 [0.3, 1.5]
2 studies · 123 participants
Low

Progesterone vs placebo/no treatment

Miscarriage per clinical pregnancy · women with oral (clomiphene citrate or letrozole) stimulation

Progesterone showed no clear difference in miscarriage rate per clinical pregnancy compared with placebo/no treatment (low certainty).

1 finding from 1 review

Luteal phase support for women trying to conceive by intrauterine insemination or sexual intercourse 2022 · Cochrane Headline outcomes only
RR 0.53 [0.25, 1.14]
2 studies · 119 participants
Low