Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

158 questions · 175 findings · 31 reviews · Headline outcomes only

No studies found 41 · 23.4%GRADE not reported 0 · 0%Very low 48 · 27.4%Low 63 · 36%Moderate 20 · 11.4%High 3 · 1.7%

Morphine vs buprenorphine

Adverse events (treatment related) To discharge · newborn infants with opioid withdrawal

It is very uncertain whether morphine changes adverse events (treatment‐related) To discharge compared with buprenorphine (very low certainty).

1 finding from 1 review

Morphine vs fentanyl

Neurodevelopmental outcomes · neonates with mechanical ventilation

The review found no eligible studies for this question.

3 findings from 1 review

Morphine vs metamizole

Improvements in pain intensity as defined by the trialist (primary outcome) · participants with acute pancreatitis pain

Morphine showed no clear difference in improvements in pain intensity as defined by the trialist (primary… compared with metamizole (low certainty).

1 finding from 1 review