Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,752 questions · 6,648 findings · 688 reviews

No studies found 1,125 · 16.9%GRADE not reported 670 · 10.1%Very low 1,796 · 27%Low 1,685 · 25.3%Moderate 1,075 · 16.2%High 297 · 4.5%

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Oral contraceptive pill (OCP) vs metformin combined with OCP

Adverse events ‐ Severe · adolescent women with PCOS

It is very uncertain whether oral contraceptive pill (OCP) changes adverse events ‐ Severe compared with metformin combined with OCP (very low certainty).

1 finding from 1 review

Transarterial embolisation and transarterial chemoembolisation vs no intervention

Death during study period · people with liver metastases

It is very uncertain whether transarterial embolisation and transarterial chemoembolisation changes mortality at 44 months from trial entry Number of participants compared with no intervention (very low certainty).

1 finding from 1 review