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What do systematic reviews say?

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Evidence found and GRADE certainty

1,655 questions · 1,751 findings · 147 reviews · Pain, Palliative and Supportive Care

No studies found 361 · 20.6%GRADE not reported 87 · 5%Very low 625 · 35.7%Low 367 · 21%Moderate 232 · 13.2%High 79 · 4.5%

Intervention not reported

At least 50% of maximum pain relief over 4 to 6 h · adults with moderate or severe acute postoperative pain

The intervention leads to higher at least 50% of maximum pain relief over 4 to 6 h (high certainty).

1 finding from 1 review

Intervention not reported

Participants with at least 1 adverse event · adults with moderate or severe acute postoperative pain

The intervention showed no clear difference in participants with at least 1 adverse event (moderate certainty).

1 finding from 1 review

Intervention not reported

At least 50% of maximum pain relief over 4 to 6 h · Adults with acute pain

The intervention probably leads to higher at least 50% of maximum pain relief over 4 to 6 h (moderate certainty).

1 finding from 1 review