Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

897 questions · 966 findings · 73 reviews

No studies found 269 · 27.8%GRADE not reported 101 · 10.5%Very low 284 · 29.4%Low 180 · 18.6%Moderate 107 · 11.1%High 25 · 2.6%

Eculizumab vs placebo

Death or disability after 12 months In the absence of data at 12 months, we report the outcome at 6 months · adults with severe Guillain‐Barré syndrome (GBS disability score > 2), within 2 weeks form onset

It is very uncertain whether eculizumab changes death or disability after 12 months In the absence of data at 12… compared with placebo (very low certainty).

1 finding from 1 review

Eculizumab vs placebo

Participants with 1 or more serious adverse events · adults with severe Guillain‐Barré syndrome (GBS disability score > 2), within 2 weeks form onset

Eculizumab showed no clear difference in participants with 1 or more serious adverse events compared with placebo (low certainty).

1 finding from 1 review

Interferon beta‐1a vs placebo

Participants with 1 or more serious adverse events · patients with Guillain‐Barré syndrome

It is very uncertain whether interferon beta‐1a changes participants with 1 or more serious adverse events compared with placebo (very low certainty).

1 finding from 1 review

Brain‐derived neurotrophic factor vs placebo

Improvement in disability grade Defined as achievement of a specified degree of improvement · patients with Guillain‐Barré syndrome

It is very uncertain whether brain‐derived neurotrophic factor changes improvement in disability grade Defined as achievement of a… compared with placebo (very low certainty).

1 finding from 1 review