Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

48 questions · 48 findings · 5 reviews

No studies found 9 · 18.8%GRADE not reported 0 · 0%Very low 5 · 10.4%Low 17 · 35.4%Moderate 16 · 33.3%High 1 · 2.1%

H2 receptor antagonists vs placebo or no prophylaxis

Clinically important upper GI bleeding · people admitted to intensive care units

H2 receptor antagonists probably leads to lower clinically important upper GI bleeding compared with placebo or no prophylaxis (moderate certainty).

1 finding from 1 review

Endothelin receptor antagonists vs placebo

Proportion of participants with improved functional class mean duration of study 16.8 weeks · pulmonary arterial hypertension

Endothelin receptor antagonists probably leads to higher proportion of participants with improved functional class mean… compared with placebo (moderate certainty).

1 finding from 1 review