Findings

What do systematic reviews say?

6 questions · 12 findings · 2 reviews · asked by two or more reviews

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 6 · 50%Low 6 · 50%Moderate 0 · 0%High 0 · 0%

Metformin vs clomiphene

Ovulation rate per woman fParticipants with BMI < 30 kg/m2 · women with polycystic ovary syndrome

Metformin showed no clear difference in ovulation rate per woman fParticipants with BMI < 30 kg/m2 compared with clomiphene citrate (low certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome 2019 · Cochrane Headline outcomes only
OR 0.8 [0.52, 1.25]
5 studies · 352 participants
Low
Insulin‐sensitising drugs (metformin, rosiglitazone, pioglitazone, D‐chiro‐inositol) for women with polycystic ovary… 2017 · Cochrane Headline outcomes only
OR 0.81 [0.51, 1.28]
4 studies · 312 participants
Low

Metformin vs clomiphene

Ovulation rate per woman fParticipants with BMI ≥ 30 kg/m2 · women with polycystic ovary syndrome

Metformin may leads to lower ovulation rate per woman fParticipants with BMI ≥ 30 kg/m2 compared with clomiphene citrate (low certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome 2019 · Cochrane Headline outcomes only
OR 0.29 [0.2, 0.43]
2 studies · 500 participants
Low
Insulin‐sensitising drugs (metformin, rosiglitazone, pioglitazone, D‐chiro‐inositol) for women with polycystic ovary… 2017 · Cochrane Headline outcomes only
OR 0.29 [0.2, 0.43]
2 studies · 500 participants
Low

Metformin vs clomiphene

Live birth rate per woman aParticipants with BMI ≥ 30 kg/m2 · women with polycystic ovary syndrome

It is very uncertain whether metformin changes live birth rate per woman aParticipants with BMI ≥ 30 kg/m2 compared with clomiphene citrate (very low certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome 2019 · Cochrane Headline outcomes only
OR 0.3 [0.17, 0.52]
2 studies · 500 participants
Very low
Insulin‐sensitising drugs (metformin, rosiglitazone, pioglitazone, D‐chiro‐inositol) for women with polycystic ovary… 2017 · Cochrane Headline outcomes only
OR 0.3 [0.17, 0.52]
2 studies · 500 participants
Very low

Metformin vs clomiphene

Clinical pregnancy rate per woman aParticipants with BMI ≥ 30 kg/m2 · women with polycystic ovary syndrome

Metformin may leads to lower clinical pregnancy rate per woman aParticipants with BMI ≥ 30 kg/m2 compared with clomiphene citrate (low certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome 2019 · Cochrane Headline outcomes only
OR 0.34 [0.21, 0.55]
2 studies · 500 participants
Low
Insulin‐sensitising drugs (metformin, rosiglitazone, pioglitazone, D‐chiro‐inositol) for women with polycystic ovary… 2017 · Cochrane Headline outcomes only
OR 0.34 [0.21, 0.55]
2 studies · 500 participants
Very low

Metformin vs clomiphene

Live birth rate per woman aParticipants with BMI < 30 kg/m2 or ≤ 32 kg/m2 · women with polycystic ovary syndrome

It is very uncertain whether metformin changes live birth rate per woman aParticipants with BMI < 30 kg/m2 or ≤ 32… compared with clomiphene citrate (very low certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome 2019 · Cochrane Headline outcomes only
OR 1.71 [1, 2.94]
3 studies · 241 participants
Very low
Insulin‐sensitising drugs (metformin, rosiglitazone, pioglitazone, D‐chiro‐inositol) for women with polycystic ovary… 2017 · Cochrane Headline outcomes only
OR 1.71 [1, 2.94]
3 studies · 241 participants
Very low

Metformin vs clomiphene

Clinical pregnancy rate per woman Participants with BMI < 30 kg/m2 or ≤ 32 kg/m2a · women with polycystic ovary syndrome

Metformin may leads to higher clinical pregnancy rate per womanaParticipants with BMI < 30 kg/m2… compared with clomiphene citrate (low certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome 2019 · Cochrane Headline outcomes only
OR 1.56 [1.06, 2.29]
6 studies · 530 participants
Low
Insulin‐sensitising drugs (metformin, rosiglitazone, pioglitazone, D‐chiro‐inositol) for women with polycystic ovary… 2017 · Cochrane Headline outcomes only
OR 1.56 [1.05, 2.33]
5 studies · 490 participants
Very low