Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,345 questions · 4,525 findings · 483 reviews

No studies found 1,024 · 22.6%GRADE not reported 388 · 8.6%Very low 1,172 · 25.9%Low 1,227 · 27.1%Moderate 576 · 12.7%High 138 · 3%

Face‐down positioning vs no face‐down positioning or posturing after macular hole surgery

Closure of macular hole · participants with idiopathic macular hole

Face‐down positioning or posturing showed no clear difference in macular hole closure (anatomical assessment) compared with no face‐down positioning or posturing after macular hole surgery (low certainty).

1 finding from 1 review

Face‐down positioning vs no face‐down positioning or posturing after macular hole surgery

Improved visual acuity (ETDRS chart at 4 metres) · participants with idiopathic macular hole

It is very uncertain whether face‐down positioning or posturing changes improved visual acuity (ETDRS chart at 4 metres) compared with no face‐down positioning or posturing after macular hole surgery (very low certainty).

1 finding from 1 review

Prehabilitation vs no prehabilitation

Complications within 30 days postoperatively · Patients with outcomes after colorectal cancer surgery

Prehabilitation showed no clear difference in complications within 30 days postoperatively compared with no prehabilitation (low certainty).

1 finding from 1 review

Percutaneous nephrolithotomy vs retrograde intrarenal surgery

Ureteral stricture or injury Assumed MCID: 2% · adults with renal stones

Percutaneous nephrolithotomy showed no clear difference in ureteral stricture or injury Assumed MCID: 2% compared with retrograde intrarenal surgery (low certainty).

1 finding from 1 review