Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,703 questions · 15,007 findings · 1,416 reviews

No studies found 2,881 · 19.2%GRADE not reported 1,551 · 10.3%Very low 3,111 · 20.7%Low 3,881 · 25.9%Moderate 2,669 · 17.8%High 914 · 6.1%

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Zonisamide vs placebo

50% responder rate · people with focal epilepsy

Zonisamide probably leads to higher 50% responder rate (whole treatment period; any dose) compared with placebo (moderate certainty).

1 finding from 1 review

Zonisamide vs placebo

Withdrawal rates ‐ Any dose · people with focal epilepsy

Zonisamide probably leads to higher withdrawal rates (whole treatment period; any dose) compared with placebo (moderate certainty).

1 finding from 1 review

Zonisamide vs placebo

Frequency of adverse effects ‐ dizziness ( · people with focal epilepsy

Zonisamide probably leads to higher adverse effects: dizziness (whole treatment period; any dose) compared with placebo (moderate certainty).

1 finding from 1 review

Zonisamide vs placebo

Adverse effect: fatigue · people with focal epilepsy

Zonisamide probably leads to higher adverse effects: fatigue (whole treatment period; any dose) compared with placebo (moderate certainty).

1 finding from 1 review

Zonisamide vs placebo

Nausea · people with focal epilepsy

Zonisamide probably leads to higher adverse effects: nausea (whole treatment period; any dose) compared with placebo (moderate certainty).

1 finding from 1 review

Zonisamide vs placebo

Somnolence · people with focal epilepsy

Zonisamide probably leads to higher adverse effects: somnolence (whole treatment period; any dose) compared with placebo (moderate certainty).

1 finding from 1 review

Levetiracetam vs placebo

50% or greater reduction in focal seizure frequency (responders) intention to treat– all doses · people with drug‐resistant focal epilepsy

Levetiracetam probably leads to higher 50% or greater reduction in focal seizure frequency (responders)… compared with placebo (moderate certainty).

1 finding from 1 review

Levetiracetam vs placebo

Somnolence · people with drug‐resistant focal epilepsy

Levetiracetam probably leads to higher adverse effects: 5 most common adverse effects (any age) – somnolence compared with placebo (moderate certainty).

1 finding from 1 review

Levetiracetam vs placebo

Adverse effects: headache · people with drug‐resistant focal epilepsy

Levetiracetam showed no clear difference in adverse effects: 5 most common adverse effects (any age) – headache compared with placebo (low certainty).

1 finding from 1 review

Levetiracetam vs placebo

Adverse effects: 5 most common adverse effects (any age) – dizziness · people with drug‐resistant focal epilepsy

Levetiracetam showed no clear difference in adverse effects: 5 most common adverse effects (any age) – dizziness compared with placebo (moderate certainty).

1 finding from 1 review