Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

70 questions · 71 findings · 6 reviews · Neuromuscular

No studies found 20 · 28.2%GRADE not reported 5 · 7%Very low 21 · 29.6%Low 9 · 12.7%Moderate 13 · 18.3%High 3 · 4.2%

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

IVIg vs PE

Number improved by 1 or more disability grades after 4 weeks · patients with Guillain‐Barré syndrome

IVIg showed no clear difference in number improved by 1 or more disability grades after 4 weeks compared with PE (moderate certainty).

1 finding from 1 review

IVIg vs PE

Dead or disabled after 12 months (48 weeks) · patients with Guillain‐Barré syndrome

IVIg showed no clear difference in dead or disabled after 12 months (48 weeks) compared with PE (low certainty).

1 finding from 1 review

IVIg vs PE

Relapse or treatment‐related fluctuation · patients with Guillain‐Barré syndrome

IVIg showed no clear difference in relapse or treatment‐related fluctuation compared with PE (low certainty).

1 finding from 1 review

IVIg vs PE

Patients in whom treatment was discontinued · patients with Guillain‐Barré syndrome

IVIg leads to lower participants in whom treatment was discontinued compared with PE (high certainty).

1 finding from 1 review

IVIg vs PE

Number of patients with adverse events attributed to treatment · patients with Guillain‐Barré syndrome

IVIg showed no clear difference in number of participants with adverse events attributed to treatment compared with PE (moderate certainty).

1 finding from 1 review