Gap finder

Search review questions

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
Time to first seizure ‐ all participants Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.86 [0.69, 1.08]4 studies · 592 participantsModerate
Intervention NR
Time to first seizure ‐ stratified by epilepsy type ‐ Generalised seizures Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 1.14 [0.73, 1.78]3 studies · 131 participantsModerate
Intervention NR
Time to first seizure ‐ stratified by epilepsy type ‐ Partial onset Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.78 [0.61, 1.01]4 studies · 461 participantsModerate
Intervention NR
Time to treatment withdrawal ‐ stratified by seizure type ‐ Generalised seizures Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 4.04 [1.61, 10.14]2 studies · 95 participantsLow
Intervention NR
Time to treatment withdrawal ‐ stratified by seizure type ‐ Partial onset Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 1.48 [1.1, 1.98]3 studies · 404 participantsLow
Intervention NR
Time to 12‐month remission ‐ all participants Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.9 [0.69, 1.19]4 studies · 599 participantsModerate
Intervention NR
Time to 12‐month remission ‐ stratified by seizure type ‐ Generalised seizures Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.77 [0.46, 1.28]3 studies · 131 participantsModerate
Intervention NR
Time to 12‐month remission ‐ stratified by seizure type ‐ Partial Onset Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.96 [0.7, 1.33]4 studies · 468 participantsModerate
Intervention NR
Time to 6‐month remission ‐ all participants Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.9 [0.71, 1.14]4 studies · 599 participantsModerate
Intervention NR
Time to 6‐month remission ‐ stratified by seizure type ‐ Generalised seizures Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.79 [0.51, 1.24]3 studies · 131 participantsModerate
Intervention NR
Time to 6‐month remission ‐ stratified by seizure type ‐ Partial onset Range of · adults and children with newly diagnosed partial onset or generalised onset seizures
Phenobarbitone versus phenytoin monotherapy for partial onset seizures and generalised onset tonic-clonic… (2013) · Cochrane
HR 0.94 [0.71, 1.25]4 studies · 468 participantsModerate
Flunarizine vs placebo
50% or greater reduction in seizure frequency Number of seizures · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 1.53 [0.59, 3.96]1 study · 93 participantsHigh
Flunarizine vs placebo
Treatment withdrawal Number of withdrawals · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 7.11 [1.73, 29.3]4 studies · 247 participantsModerate
Flunarizine vs placebo
Adverse effects ‐ Blurred vision No of patients with blurred vision · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 4.09 [0.85, 19.73]1 study · 93 participantsHigh
Flunarizine vs placebo
Adverse effects ‐ Dizziness No of patients with dizziness · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 1.82 [0.72, 4.61]1 study · 93 participantsHigh
Flunarizine vs placebo
Adverse effects ‐ Fatigue No of patients with fatigue · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 1.66 [0.59, 4.64]1 study · 93 participantsHigh
Flunarizine vs placebo
Adverse effects ‐ Irritability No of patients with irritability · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 3.07 [0.6, 15.68]1 study · 93 participantsHigh
Flunarizine vs placebo
Adverse effects ‐ Vomiting No of patients with vomiting · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 4.09 [0.57, 29.16]1 study · 93 participantsHigh
Nimodipine vs placebo
50% or greater reduction in seizure frequency Number of seizures · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 7.78 [0.46, 130.88]1 study · 17 participantsModerate
Nimodipine vs placebo
Treatment withdrawal Number of withdrawals · patients with drug‐resistant epilepsy
Calcium antagonists as an add‐on therapy for drug‐resistant epilepsy (2013) · Cochrane
RR 2.25 [0.25, 20.38]1 study · 17 participantsModerate