Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

73 questions · 77 findings · 8 reviews

No studies found 23 · 29.9%GRADE not reported 6 · 7.8%Very low 12 · 15.6%Low 18 · 23.4%Moderate 10 · 13%High 8 · 10.4%

Topiramate vs placebo

Acceptability. Participants experiencing troublesome adverse effects of any nature · adults with acute affective episodes in bipolar disorder

Topiramate showed no clear difference in acceptability with topiramate (endpoint: 12 weeks) Number of… compared with placebo (low certainty).

1 finding from 1 review

Topiramate vs placebo

Response to treatment with topiramate. Number of participants experiencing a 50% reduction or greater in mean score from baseline to end of treatment on symptom rating scales in manic and mixed episodes · adults with acute affective episodes in bipolar disorder

The review found no eligible studies for this question.

1 finding from 1 review

Topiramate vs placebo

Remission · adults with acute affective episodes in bipolar disorder

The review found no eligible studies for this question.

2 findings from 1 review

Topiramate vs placebo

Proportion of responders (at least 50% seizure frequency reduction in PGTCS) · people with juvenile myoclonic epilepsy

It is very uncertain whether topiramate changes proportion of responders (at least 50% seizure frequency reduction… compared with placebo (very low certainty).

1 finding from 1 review

Topiramate vs valproate

Proportion of responders (at least 50% seizure frequency reduction in myoclonic seizures) · people with juvenile myoclonic epilepsy

It is very uncertain whether topiramate changes proportion of responders (at least 50% seizure frequency reduction… compared with valproate (very low certainty).

1 finding from 1 review

Topiramate vs valproate

Proportion of responders (at least 50% seizure frequency reduction in PGTCS) · people with juvenile myoclonic epilepsy

It is very uncertain whether topiramate changes proportion of responders (at least 50% seizure frequency reduction… compared with valproate (very low certainty).

1 finding from 1 review

Topiramate vs valproate

Seizure freedom · people with juvenile myoclonic epilepsy

It is very uncertain whether topiramate changes number of participants who were seizure‐free compared with valproate (very low certainty).

1 finding from 1 review

Topiramate vs placebo

50% or greater reduction in seizure frequency · people with drug‐resistant focal epilepsy

Topiramate leads to higher 50% or greater reduction in seizure frequency (ITT analysis) compared with placebo (high certainty).

1 finding from 1 review

Topiramate vs placebo

Adverse effects ‐ difficulty with concentration/concentration impaired/concentration‐attention difficulties · people with drug‐resistant focal epilepsy

Topiramate probably leads to higher adverse effects ‐ difficulty with concentration/concentration… compared with placebo (moderate certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to treatment failure (any reason related to treatment) All participants ‐ adjusted by seizure type Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate showed no clear difference in time to treatment failure (any reason related to treatment) All… compared with carbamazepine (moderate certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to treatment failure (any reason related to treatment) Subgroup: focal onset seizures Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate probably leads to higher time to treatment failure (any reason related to treatment)Subgroup:… compared with carbamazepine (moderate certainty).

1 finding from 1 review