Findings

What do systematic reviews say?

1 questions · 1 findings · 1 reviews · Movement Disorders

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 1 · 100%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Duration of effect 618 participants (5 RCTs) · cervical dystonia

It is very uncertain whether botulinum toxin type A changes duration of effect 618 participants (5 RCTs) compared with placebo (very low certainty).

1 finding from 1 review

Botulinum toxin type A therapy for cervical dystonia 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
Very low