Question

Metformin combined with clomiphene citrate vs clomiphene: Ovulation rate

Population
women with polycystic ovary syndrome
Intervention
Metformin combined with clomiphene citrate
Comparison
clomiphene
Outcome
Ovulation rate

Reviews word the same question differently. Two decision models (TypeSafe's Jev and Liquid AI's d1) judged each wording of the population, intervention, comparator and outcome against the others, and rows count as this question only when both agree on all four. Timing, setting and subgroup never split a question: they are shown on each row.

Reviews
2
current versions
Answers
2
current versions
GRADE rated
2
answers with a certainty rating
Included studies linked
0
full-text reviews only
No studies 0 · 0%Ungraded 0 · 0%Very low 0 · 0%Low 1 · 50%Moderate 1 · 50%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

How each review answered it

Include earlier review versions
QuestionEffectEvidenceStatus / GRADE
Metformin combined with clomiphene citrate vs clomiphene citrate alone
Ovulation rate per woman · women with polycystic ovary syndrome
Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome (2019) · Cochrane
OR 1.65 [1.35, 2.03]22 studies · 1601 participantsLow
Metformin combined with clomiphene citrate vs clomiphene citrate alone
Ovulation rate per woman · women with polycystic ovary syndrome
Insulin‐sensitising drugs (metformin, rosiglitazone, pioglitazone, D‐chiro‐inositol) for women with… (2017) · Cochrane
OR 1.57 [1.28, 1.92]21 studies · 1624 participantsModerate

Trials and studies behind the answers

The primary studies that full-text reviews tie to these outcomes. Reviews from the Summary of Findings tier list no included studies here, and trials have not yet been matched to questions on their own, so this list is incomplete.

No included studies are linked to these answers yet.