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)

1,173 questions in 89 reviews · Neuromuscular

current versions
No studies 302 · 25.7%Ungraded 119 · 10.1%Very low 267 · 22.8%Low 239 · 20.4%Moderate 177 · 15.1%High 69 · 5.9%

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
Interferon beta‐1a vs placebo
Change in muscle mass at 6 months (%) · people with inclusion body myositis
Treatment for inclusion body myositis (2015) · Cochrane
no estimate extracted2 studies · 58 participantsModerate
Mycophenolate mofetil vs placebo
Improvement in GNDS after 12 months1 · people with multifocal motor neuropathy
Immunosuppressant and immunomodulatory treatments for multifocal motor neuropathy (2015) · Cochrane
RR 0.54 [0.06, 5.26]1 study · 28 participantsModerate
Mycophenolate mofetil vs placebo
Serious adverse events · people with multifocal motor neuropathy
Immunosuppressant and immunomodulatory treatments for multifocal motor neuropathy (2015) · Cochrane
no estimate extracted1 study · 28 participantsModerate
Plasma exchange vs sham exchange
Change in disability after 4 weeks disability grade change. Scale from: 0 to 10; lower is better · people with CIDP
Plasma exchange for chronic inflammatory demyelinating polyradiculoneuropathy (2015) · Cochrane
no estimate extracted1 study · 36 participantsModerate
Plasma exchange vs sham exchange
Change in impairment (NIS) after 4 weeks NIS score points. Scale from: 0 to 280; lower is better · people with CIDP
Plasma exchange for chronic inflammatory demyelinating polyradiculoneuropathy (2015) · Cochrane
no estimate extracted2 studies · 59 participantsHigh
Plasma exchange vs sham exchange
Change in mean compound muscle action potential amplitude after 4 weeks mA · people with CIDP
Plasma exchange for chronic inflammatory demyelinating polyradiculoneuropathy (2015) · Cochrane
no estimate extracted1 study · 30 participantsModerate
Plasma exchange vs sham exchange
Serious adverse events ‐ not measured · people with CIDP
Plasma exchange for chronic inflammatory demyelinating polyradiculoneuropathy (2015) · Cochrane
no estimate extractedNRNo studies
Plasma exchange vs sham exchange
Only 1 trial. · people with CIDP
Plasma exchange for chronic inflammatory demyelinating polyradiculoneuropathy (2015) · Cochrane
no estimate extracted1 study · 1 participantsUngraded
Quinine vs placebo
Number of cramps over 2 weeks · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted13 studies · 952 participantsLow
Quinine vs a quinine‐vitamin E combination (Q‐Vel)
Cramp intensity (on 3‐point scale; 1 = mild; 2 = moderate; 3 = severe) · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted3 studies · 510 participantsLow
Quinine vs a quinine‐vitamin E combination (Q‐Vel)
Participants suffering major adverse events · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted3 studies · 510 participantsModerate
Quinine vs a quinine‐vitamin E combination (Q‐Vel)
Participants suffering minor adverse events · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted3 studies · 510 participantsModerate
Quinine vs placebo
Cramp intensity (on 3‐point scale; 1 = mild; 2 = moderate; 3 = severe) · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted7 studies · 666 participantsModerate
Quinine vs placebo
Participants suffering major adverse events · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted18 studies · 1103 participantsModerate
Quinine vs placebo
Participants suffering minor adverse events · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted16 studies · 969 participantsModerate
Quinine vs vitamin E
Number of cramps over 2 weeks · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted3 studies · 513 participantsLow
Quinine vs vitamin E
Cramp intensity (on 3‐point scale; 1 = mild; 2 = moderate; 3 = severe) · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted3 studies · 513 participantsModerate
Quinine vs vitamin E
Participants suffering major adverse events · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted3 studies · 513 participantsModerate
Quinine vs vitamin E
Participants suffering minor adverse events · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted2 studies · 483 participantsModerate
Quinine vs a quinine‐vitamin E combination (Q‐Vel)
Number of cramps over 2 weeks · people with muscle cramps
Quinine for muscle cramps (2015) · Cochrane
no estimate extracted2 studies · 486 participantsLow
Plasma exchange (PE) vs sham exchange
Change in disability Neuropathy Disability Score · people with IgG and IgA paraproteinaemic neuropathy
Treatment for IgG and IgA paraproteinaemic neuropathy (2015) · Cochrane
no estimate extracted1 study · 18 participantsLow
Plasma exchange (PE) vs sham exchange
Change in sensation using a validated scale (e.g. INCAT sensory sum score) ‐ not measured · people with IgG and IgA paraproteinaemic neuropathy
Treatment for IgG and IgA paraproteinaemic neuropathy (2015) · Cochrane
no estimate extractedNRNo studies
Plasma exchange (PE) vs sham exchange
Change in strength Neuropathy Disability Score (weakness) · people with IgG and IgA paraproteinaemic neuropathy
Treatment for IgG and IgA paraproteinaemic neuropathy (2015) · Cochrane
no estimate extracted1 study · 18 participantsLow
Plasma exchange (PE) vs sham exchange
Adverse events ‐ not reported · people with IgG and IgA paraproteinaemic neuropathy
Treatment for IgG and IgA paraproteinaemic neuropathy (2015) · Cochrane
no estimate extractedNRNo studies
IVIg vs placebo
(Change in) Activity limitations ≤ 3 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted2 studies · 185 participantsModerate
Amantadine vs placebo
Activity limitations ‐ not measured · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extractedNRNo studies
Amantadine vs placebo
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 25 participantsUngraded
Prednisone vs placebo
Activity limitations ‐ not measured · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extractedNRNo studies
Prednisone vs placebo
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 17 participantsUngraded
Muscle strengthening vs control
Activity limitations ‐ not measured · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extractedNRNo studies
Muscle strengthening vs control
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 10 participantsUngraded
Rehabilitation in cold climate vs usual care
Activity limitations at 3 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 53 participantsLow
Rehabilitation in cold climate vs usual care
Activity limitations at 6 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 53 participantsLow
Rehabilitation in cold climate vs usual care
Activity limitations at 3 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 53 participantsLow
Rehabilitation in cold climate vs usual care
Activity limitations at 6 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 53 participantsLow
IVIg vs placebo
Activity limitations > 3 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted2 studies · 91 participantsLow
Rehabilitation in cold climate vs usual care
Adverse events ‐ not measured · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extractedNRNo studies
Rehabilitation in warm climate vs usual care
Activity limitations 3 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 57 participantsLow
Rehabilitation in warm climate vs usual care
Activity limitations 3 months · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 57 participantsLow
Rehabilitation in warm climate vs usual care
Adverse events ‐ not measured · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extractedNRNo studies
Static magnetic fields vs placebo
Activity limitations ‐ not measured · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extractedNRNo studies
Static magnetic fields vs placebo
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 50 participantsUngraded
IVIg vs placebo
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted3 studies · 212 participantsUngraded
Modafinil vs placebo
Activity limitations · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 33 participantsHigh
Modafinil vs placebo
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted2 studies · 50 participantsUngraded
Pyridostigmine vs placebo
Change in activity limitations · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 124 participantsModerate
Pyridostigmine vs placebo
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted2 studies · 193 participantsUngraded
Lamotrigine vs control
Activity limitations · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 30 participantsVery low
Lamotrigine vs control
Adverse events · people with postpolio syndrome
Treatment for postpolio syndrome (2015) · Cochrane
no estimate extracted1 study · 30 participantsUngraded
Gabapentin vs placebo
Number of patients with self reported pain relief of 50% or greater (not measured) · patients with pain in Guillain‐Barré syndrome
Pharmacological treatment for pain in Guillain‐Barré syndrome (2015) · Cochrane
no estimate extractedNRNo studies