Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

49 questions · 50 findings · 2 reviews

No studies found 0 · 0%GRADE not reported 1 · 2%Very low 15 · 30%Low 19 · 38%Moderate 10 · 20%High 5 · 10%

Deep brain stimulation vs sham stimulation

Adverse events · adults with dystonia (generalised, segmental, and cervical)

It is very uncertain whether deep brain stimulation changes adverse Events compared with sham stimulation (very low certainty).

1 finding from 1 review

Deep brain stimulation vs sham stimulation

Tolerability · adults with dystonia (generalised, segmental, and cervical)

It is very uncertain whether deep brain stimulation changes tolerability compared with sham stimulation (very low certainty).

1 finding from 1 review

Intervention not reported

Seizure freedom (3‐month blinded evaluation period) · adults with IQ > 70 with refractory focal epilepsy

The intervention showed no clear difference in seizure freedom (3‐month blinded evaluation period) (moderate certainty).

1 finding from 1 review

Intervention not reported

Adverse events · patients with refractory (multi)focal or generalized epilepsy
1 finding from 1 review

Intervention not reported

Neuropsychological outcome (3 months) · patients with refractory (multi)focal or generalized epilepsy
1 finding from 1 review

Intervention not reported

Quality of life · patients with refractory (multi)focal or generalized epilepsy
1 finding from 1 review

Intervention not reported

Seizure freedom (1‐ to 3‐month blinded evaluation period) · patients with refractory (multi)focal or generalized epilepsy

The intervention showed no clear difference in seizure freedom (1‐ to 3‐month blinded evaluation period) (moderate certainty).

1 finding from 1 review

Intervention not reported

Responder rate (1‐ to 3‐month blinded evaluation period) · patients with refractory (multi)focal or generalized epilepsy

The intervention showed no clear difference in responder rate (1‐ to 3‐month blinded evaluation period) (low certainty).

1 finding from 1 review

Intervention not reported

Seizure frequency reduction (1‐ to 3‐month blinded evaluation period) · patients with refractory (multi)focal or generalized epilepsy
1 finding from 1 review