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What do systematic reviews say?

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Evidence found and GRADE certainty

7 questions · 7 findings · 3 reviews · Colorectal

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No studies found 2 · 28.6%GRADE not reported 0 · 0%Very low 1 · 14.3%Low 2 · 28.6%Moderate 2 · 28.6%High 0 · 0%

Summary of findings table ‐ Combined mechanical and oral antibiotic bowel preparation vs oral antibiotics

All‐cause mortality · Patients undergoing elective colorectal surgery

Summary of findings table ‐ Combined mechanical and oral antibiotic… showed no clear difference in mortality compared with oral antibiotics alone (low certainty).

1 finding from 1 review

Summary of findings table ‐ Combined mechanical and oral antibiotic bowel preparation vs no bowel preparation

All‐cause mortality · Patients undergoing elective colorectal surgery

Summary of findings table ‐ Combined mechanical and oral antibiotic… showed no clear difference in mortality compared with no bowel preparation (low certainty).

1 finding from 1 review

Summary of findings table ‐ Combined mechanical and oral antibiotic bowel preparation vs mechanical bowel preparation alone

All‐cause mortality · Patients undergoing elective colorectal surgery

Summary of findings table ‐ Combined mechanical and oral antibiotic… showed no clear difference in mortality compared with mechanical bowel preparation alone (moderate certainty).

1 finding from 1 review

Intervention not reported

Secondary ‐ All‐cause mortality · Patients with acute uncomplicated diverticulitis

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Secondary ‐ All cause mortality · Patients with acute uncomplicated diverticulitis

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Secondary ‐ All‐cause mortality  · Patients with acute uncomplicated diverticulitis

The intervention showed no clear difference in secondary ‐ All‐cause mortality  (moderate certainty).

1 finding from 1 review