Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

81 questions · 87 findings · 19 reviews · Pain, Palliative and Supportive Care

No studies found 3 · 3.4%GRADE not reported 1 · 1.1%Very low 31 · 35.6%Low 32 · 36.8%Moderate 17 · 19.5%High 3 · 3.4%

Intervention not reported

Achievement of at least 50% reduction in headache severity Post‐treatment Higher scores indicate more children with reduced headache · children or adolescents with headaches

It is very uncertain whether the intervention changes achievement of at least 50% reduction in headache severity… (very low certainty).

1 finding from 1 review