Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

203 questions · 206 findings · 21 reviews

No studies found 51 · 24.8%GRADE not reported 11 · 5.3%Very low 59 · 28.6%Low 57 · 27.7%Moderate 19 · 9.2%High 9 · 4.4%

Intervention not reported

Participants with at least 30% or at least 50% reduction in pain · people with cancer pain
1 finding from 1 review

Intervention not reported

PGIC much or very much improved · people with cancer pain
1 finding from 1 review

Intervention not reported

Mean pain intensity at end of study · people with cancer pain
1 finding from 1 review

Intervention not reported

Pain no worse than mild at one or two weeks (or equivalent) · people with cancer pain
1 finding from 1 review

Intervention not reported

Mean quality of life or "well‐being" · people with cancer pain
1 finding from 1 review

Intervention not reported

Participant preference · people with cancer pain
1 finding from 1 review