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What do systematic reviews say?

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Evidence found and GRADE certainty

690 questions · 711 findings · 93 reviews

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No studies found 167 · 23.5%GRADE not reported 36 · 5.1%Very low 181 · 25.5%Low 202 · 28.4%Moderate 100 · 14.1%High 25 · 3.5%

Summary of findings: unilateral laminotomy vs conventional laminectomy

Satisfactory recovery Bilateral laminotomy compared with conventional laminectomy Satisfactory recovery was defined as 'good' or 'excellent' self‐perceived recovery · patients with lumbar stenosis

Summary of findings: unilateral laminotomy showed no clear difference in satisfactory recovery Unilateral laminotomy compared with… compared with conventional laminectomy (low certainty).

1 finding from 1 review

Summary of findings. Below‐elbow vs above‐elbow cast

Physical function · children with either displaced distal radius fracture with intact or displaced ulna fracture (both‐bone fracture), or minimally displaced…

The review found no eligible studies for this question.

2 findings from 1 review

Summary of findings. Below‐elbow vs above‐elbow cast

'Treatment failure': secondary procedures such as remanipulation for early loss of position (only data for this used here); and change in treatment ( · children with either displaced distal radius fracture with intact or displaced ulna fracture (both‐bone fracture), or minimally displaced…

It is very uncertain whether summary of findings. Below‐elbow changes 'Treatment failure': secondary procedures such as remanipulation for… compared with above‐elbow cast (very low certainty).

1 finding from 1 review

Summary of findings. Below‐elbow vs above‐elbow cast

Minor complications (less serious).j Here represented by referral for physical therapy for range of motion limitation (post‐immobilisation after 4 weeks) · children with either displaced distal radius fracture with intact or displaced ulna fracture (both‐bone fracture), or minimally displaced…

It is very uncertain whether summary of findings. Below‐elbow changes minor complications.,j,k Here represented by Referral for physical… compared with above‐elbow cast (very low certainty).

1 finding from 1 review

Pregabalin 300 mg vs placebo

Patient satisfaction with analgesia ‐ not reported · women having medical abortion before 14 weeks' gestation

Summary of findings table ‐ Pregabalin 300 mg showed no clear difference in patient satisfaction with analgesia compared with placebo (low certainty).

1 finding from 1 review

Pregabalin 300 mg vs placebo

Patient satisfaction with abortion care overall ‐ not reported · women having medical abortion before 14 weeks' gestation

Summary of findings table ‐ Pregabalin 300 mg showed no clear difference in patient satisfaction with abortion care overall compared with placebo (low certainty).

1 finding from 1 review