Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,776 questions · 7,311 findings · 959 reviews · Headline outcomes only

No studies found 1,498 · 20.5%GRADE not reported 303 · 4.1%Very low 1,839 · 25.2%Low 1,991 · 27.2%Moderate 1,277 · 17.5%High 403 · 5.5%

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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

PUL vs TURP

Retreatment

It is very uncertain whether PUL changes retreatment compared with TURP (very low certainty).

2 findings from 1 review