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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.

Population

Intervention or exposure

Comparison

Outcome

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Review versions

759 questions in 57 reviews · Colorectal

current versions

No studies 91 · 12%Ungraded 12 · 1.6%Very low 209 · 27.5%Low 229 · 30.2%Moderate 160 · 21.1%High 58 · 7.6%

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.

Question	Effect	Evidence	Status / GRADE
Ayurvedic seton vs Conventional fistulotomy Recurrence · patients with anorectal fistula Surgical intervention for anorectal fistula (2010) · Cochrane	OR 0.38 [0.02, 9.64]	1 study · 100 participants	Moderate
Ayurvedic seton vs Conventional fistulotomy Incontinence · patients with anorectal fistula Surgical intervention for anorectal fistula (2010) · Cochrane	OR 2.07 [0.47, 9.19]	1 study · 100 participants	Moderate
Fibrin glue vs Conventional fistulotomy / seton Recurrence simple fistula · patients with anorectal fistula Surgical intervention for anorectal fistula (2010) · Cochrane	OR 15 [0.6, 376.7]	1 study · 13 participants	Moderate
Fibrin glue vs Conventional fistulotomy / seton Incontinence simple fistula · patients with anorectal fistula Surgical intervention for anorectal fistula (2010) · Cochrane	no estimate extracted	1 study · 13 participants	High
Radiofrequency vs Conventional fistula surgery Recurrence · patients with anorectal fistula Surgical intervention for anorectal fistula (2010) · Cochrane	OR 0.73 [0.15, 3.48]	2 studies · 122 participants	Low
Radiofrequency vs Conventional fistula surgery Incontinence · patients with anorectal fistula Surgical intervention for anorectal fistula (2010) · Cochrane	OR 0.44 [0.14, 1.41]	2 studies · 122 participants	Moderate
Fistulotomy vs Marsupialization fistulotomy Recurrence · patients with anorectal fistula Surgical intervention for anorectal fistula (2010) · Cochrane	OR 1.26 [0.27, 5.97]	2 studies · 137 participants	Moderate
Intra‐abdominal drainage vs no drainage Anastomotic dehiscence · unselected population undergoing elective colorectal anastomosis Intra‐abdominal drains for the prophylaxis of anastomotic leak in elective colorectal surgery (2004) · Cochrane	RR 1.4 [0.45, 4.4]	2 studies · 809 participants	Low
Intra‐abdominal drainage vs no drainage Mortality · unselected population undergoing elective colorectal anastomosis Intra‐abdominal drains for the prophylaxis of anastomotic leak in elective colorectal surgery (2004) · Cochrane	RR 0.77 [0.41, 1.45]	3 studies · 908 participants	Low