Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,532 questions · 2,642 findings · 483 reviews · Headline outcomes only

No studies found 534 · 20.2%GRADE not reported 82 · 3.1%Very low 641 · 24.3%Low 807 · 30.5%Moderate 472 · 17.9%High 106 · 4%

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

Acupuncture vs sham

Change in SBP shortly after last session · people with primary hypertension
1 finding from 1 review

Acupuncture vs sham

Change in DBP shortly after last session · people with primary hypertension
1 finding from 1 review

Intervention not reported

Adverse events · people with primary hypertension
1 finding from 1 review