Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

104 questions · 107 findings · 10 reviews

No studies found 22 · 20.6%GRADE not reported 0 · 0%Very low 37 · 34.6%Low 19 · 17.8%Moderate 22 · 20.6%High 7 · 6.5%

Combined oral contraceptive pill vs levonorgestrel intrauterine system

Adverse effects ‐ Any adverse events · heavy menstrual bleeding

It is very uncertain whether combined oral contraceptive pill changes adverse effects ‐ Any adverse events compared with levonorgestrel‐releasing intrauterine system (very low certainty).

1 finding from 1 review