Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

884 questions · 892 findings · 68 reviews · Anaesthesia

No studies found 118 · 13.2%GRADE not reported 156 · 17.5%Very low 187 · 21%Low 270 · 30.3%Moderate 119 · 13.3%High 42 · 4.7%

Scalp block vs placebo or control

Adverse event nausea and vomiting (0 to 24 hours) · adults undergoing brain surgery

It is very uncertain whether scalp block changes adverse event nausea and vomiting (0 to 24 hours) compared with control or placebo intervention (very low certainty).

1 finding from 1 review