Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

234 questions · 264 findings · 18 reviews

No studies found 72 · 27.3%GRADE not reported 15 · 5.7%Very low 84 · 31.8%Low 64 · 24.2%Moderate 24 · 9.1%High 5 · 1.9%

Metformin combined with clomiphene citrate vs clomiphene

Gastrointestinal adverse events · women with polycystic ovary syndrome

Metformin combined with clomiphene citrate probably leads to higher adverse events (gastrointestinal) per woman compared with clomiphene citrate alone (moderate certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin combined with clomiphene citrate vs clomiphene

Clinical pregnancy rate · women with polycystic ovary syndrome

Metformin combined with clomiphene citrate probably leads to higher clinical pregnancy rate per woman compared with clomiphene citrate alone (moderate certainty).

2 findings from 2 reviews · compare the 2 reviews

Metformin combined with clomiphene citrate vs clomiphene

Ovulation rate · women with polycystic ovary syndrome

Metformin combined with clomiphene citrate may leads to higher ovulation rate per woman compared with clomiphene citrate alone (low certainty).

2 findings from 2 reviews · compare the 2 reviews

Summary of findings table for metformin plus intensive diet and exercise vs intensive diet and exercise

Development of type 2 diabetes · people at increased risk for developing type 2 diabetes

It is very uncertain whether summary of findings table for metformin plus intensive diet and… changes incidence of type 2 diabetes mellitus (N) Diagnostic criteria: 2… compared with intensive diet and exercise (very low certainty).

1 finding from 1 review