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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

970 questions in 77 reviews · Epilepsy

current versions
No studies 190 · 19.6%Ungraded 42 · 4.3%Very low 135 · 13.9%Low 289 · 29.8%Moderate 242 · 24.9%High 72 · 7.4%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Intervention NR
Lack of efficacy · adults and children with focal seizures
Antiepileptic drug monotherapy for epilepsy: a network meta‐analysis of individual participant data (2022) · Cochrane
no estimate extracted3 studies · 388 participantsHigh
Intervention NR
Any reason · adults and children with focal seizures
Antiepileptic drug monotherapy for epilepsy: a network meta‐analysis of individual participant data (2022) · Cochrane
no estimate extracted9 studies · 2203 participantsHigh
Intervention NR
Adverse events · adults and children with focal seizures
Antiepileptic drug monotherapy for epilepsy: a network meta‐analysis of individual participant data (2022) · Cochrane
no estimate extracted9 studies · 2203 participantsHigh
Intervention NR
Lack of efficacy · adults and children with focal seizures
Antiepileptic drug monotherapy for epilepsy: a network meta‐analysis of individual participant data (2022) · Cochrane
no estimate extracted8 studies · 2098 participantsHigh
Intervention NR
Any reason · adults and children with generalised tonic‐clonic seizures with or without other seizure types
Antiepileptic drug monotherapy for epilepsy: a network meta‐analysis of individual participant data (2022) · Cochrane
no estimate extracted4 studies · 405 participantsHigh
Intervention NR
Adverse events · adults and children with generalised tonic‐clonic seizures with or without other seizure types
Antiepileptic drug monotherapy for epilepsy: a network meta‐analysis of individual participant data (2022) · Cochrane
no estimate extracted2 studies · 117 participantsHigh
Intervention NR
Lack of efficacy · adults and children with generalised tonic‐clonic seizures with or without other seizure types
Antiepileptic drug monotherapy for epilepsy: a network meta‐analysis of individual participant data (2022) · Cochrane
no estimate extracted4 studies · 405 participantsHigh
Brivaracetam vs placebo
50% or greater reduction in seizure frequency (responder rate) · people with drug‐resistant focal epilepsy
Brivaracetam add‐on therapy for drug‐resistant epilepsy (2022) · Cochrane
RR 1.81 [1.53, 2.14]6 studies · 2411 participantsModerate
Brivaracetam vs placebo
Seizure freedom · people with drug‐resistant focal epilepsy
Brivaracetam add‐on therapy for drug‐resistant epilepsy (2022) · Cochrane
RR 5.89 [2.3, 15.13]6 studies · 2411 participantsLow
Brivaracetam vs placebo
Treatment withdrawal · people with drug‐resistant focal epilepsy
Brivaracetam add‐on therapy for drug‐resistant epilepsy (2022) · Cochrane
RR 1.27 [0.94, 1.74]6 studies · 2411 participantsLow
Brivaracetam vs placebo
Proportion of participants who experienced adverse events leading to treatment withdrawal · people with drug‐resistant focal epilepsy
Brivaracetam add‐on therapy for drug‐resistant epilepsy (2022) · Cochrane
RR 1.54 [1.02, 2.33]6 studies · 2411 participantsLow
Brivaracetam vs placebo
Proportion of participants who experienced any adverse events · people with drug‐resistant focal epilepsy
Brivaracetam add‐on therapy for drug‐resistant epilepsy (2022) · Cochrane
RR 1.08 [1, 1.17]5 studies · 2011 participantsModerate
Clonazepam vs carbamazepine
Proportion of participants seizure‐free at 12 months after randomization ‐ not reported · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs ethosuximide
Proportion of participants with TEAEs leading to discontinuation during the treatment period · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs carbamazepine
Proportion of participants seizure‐free at 24 months after randomization ‐ not reported · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs carbamazepine
Proportion of responders (those with at least a 50% reduction in seizure frequency from baseline to end of treatment) · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs carbamazepine
Proportion of participants with treatment‐emergent adverse events (TEAEs) during the treatment period · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs carbamazepine
Proportion of participants with treatment‐emergent adverse events (TEAEs) leading to discontinuation during the treatment period (1 RCT; n = 36) · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
RR 2.61 [0.8, 8.52]NRVery low
Clonazepam vs ethosuximide
Proportion of participants seizure‐free at 12 months after randomization · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs ethosuximide
Proportion of participants seizure‐free at 24 months after randomization · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs ethosuximide
Proportion of responders (those with at least a 50% reduction in seizure frequency from baseline to end of treatment) · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Clonazepam vs ethosuximide
Proportion of participants with treatment‐emergent adverse events (TEAEs) during the treatment period · people with newly diagnosed epilepsy
Clonazepam monotherapy for treating people with newly diagnosed epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Osmotic‐release oral system methylphenidate vs placebo
Seizure frequency · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extracted1 study · 33 participantsLow
Omega‐3 (with risperidone and previous ASM) vs risperidone and previous ASM only
Proportion of people achieving 50% or greater reduction in monthly seizure frequency (change from baseline) · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
RR 2.79 [0.84, 9.24]1 study · 56 participantsLow
Omega‐3 (with risperidone and previous ASM) vs risperidone and previous ASM only
ADHD symptoms · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Omega‐3 (with risperidone and previous ASM) vs risperidone and previous ASM only
Proportion of people experiencing adverse drug events · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
RR 1.4 [0.44, 4.42]1 study · 56 participantsLow
Osmotic‐release oral system methylphenidate vs placebo
Proportion of people withdrawing from treatment · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
RR 2.8 [1.14, 6.89]1 study · 33 participantsModerate
Osmotic‐release oral system methylphenidate vs placebo
Seizure severity · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extracted1 study · 33 participantsLow
Osmotic‐release oral system methylphenidate vs placebo
Proportion of people experiencing 50% or greater reduction in seizure frequency · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Osmotic‐release oral system methylphenidate vs placebo
ADHD symptoms · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extracted1 study · 33 participantsLow
Osmotic‐release oral system methylphenidate vs placebo
Proportion of people experiencing adverse drug events · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extracted1 study · 33 participantsModerate
Omega‐3 (with risperidone and previous ASM) vs risperidone and previous ASM only
Seizure frequency (monthly, postintervention) · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extracted1 study · 56 participantsLow
Omega‐3 (with risperidone and previous ASM) vs risperidone and previous ASM only
Proportion of individuals withdrawing from treatment · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
RR 0.65 [0.12, 3.59]1 study · 61 participantsLow
Omega‐3 (with risperidone and previous ASM) vs risperidone and previous ASM only
Seizure severity · people with ADHD and epilepsy
Stimulant and non‐stimulant drug therapy for people with attention deficit hyperactivity disorder and epilepsy (2022) · Cochrane
no estimate extractedNRNo studies
Gabapentin vs placebo
Reduction in seizure frequency of ≥ 50%: primary analysisNumber of seizures reported in seizure diary · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 1.89 [1.4, 2.55]6 studies · 1206 participantsModerate
Gabapentin vs placebo
Treatment withdrawalNumber of participants withdrawn for any reason · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 1.05 [0.74, 1.49]6 studies · 1206 participantsModerate
Gabapentin vs placebo
Adverse effects: ataxiaNumber of participants experiencing ataxia · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 2.013 studies · 787 participantsLow
Gabapentin vs placebo
Adverse effects: dizzinessNumber of participants experiencing dizziness · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 2.436 studies · 1206 participantsModerate
Gabapentin vs placebo
Adverse effects: fatigueNumber of participants experiencing fatigue · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 1.955 studies · 1161 participantsLow
Gabapentin vs placebo
Adverse effects: nauseaNumber of participants experiencing nausea · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 0.954 studies · 1034 participantsModerate
Gabapentin vs placebo
Adverse effects: somnolenceNumber of participants experiencing somnolence · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 1.936 studies · 1206 participantsModerate
Gabapentin vs placebo
Adverse effects: headacheNumber of participants experiencing headache · people with drug‐resistant focal epilepsy
Gabapentin add‐on treatment for drug‐resistant focal epilepsy (2021) · Cochrane
RR 0.796 studies · 1206 participantsModerate
Intermittent oral or rectal diazepam vs placebo or no treatment
Recurrent seizure at 6 months · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
RR 0.64 [0.48, 0.85]6 studies · 1151 participantsModerate
Continuous phenobarbital vs placebo or no treatment
Recurrent seizure at 18 months · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
RR 0.77 [0.56, 1.05]2 studies · 264 participantsModerate
Intermittent oral levetiracetam vs placebo (any antipyretics)
Recurrent seizures at 12 months · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
RR 0.27 [0.15, 0.52]1 study · 115 participantsVery low
Intermittent oral levetiracetam vs placebo (any antipyretics)
Recurrent seizures at 18 months · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
no estimate extractedNRNo studies
Intermittent oral levetiracetam vs placebo (any antipyretics)
Recurrent seizures at 24 months · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
no estimate extractedNRNo studies
Intermittent oral levetiracetam vs placebo (any antipyretics)
Recurrent seizures at 36 months · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
no estimate extractedNRNo studies
Intermittent oral levetiracetam vs placebo (any antipyretics)
Recurrent seizures at 48 months · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
no estimate extractedNRNo studies
Intermittent oral levetiracetam vs placebo (any antipyretics)
Recurrent seizures at 60 months or greater · children with febrile seizures
Prophylactic drug management for febrile seizures in children (2021) · Cochrane
no estimate extractedNRNo studies