Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,908 questions · 3,101 findings · 509 reviews

No studies found 571 · 18.4%GRADE not reported 358 · 11.5%Very low 723 · 23.3%Low 854 · 27.5%Moderate 489 · 15.8%High 106 · 3.4%

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