Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

749 questions · 769 findings · 63 reviews · Headline outcomes only

No studies found 202 · 26.3%GRADE not reported 31 · 4%Very low 172 · 22.4%Low 211 · 27.4%Moderate 106 · 13.8%High 47 · 6.1%

More than 24 hours of antibiotics vs 24 hours of antibiotics

Abdominal surgical site infection · people undergoing laparotomy for penetrating abdominal trauma

It is very uncertain whether more than 24 hours of antibiotics changes abdominal surgical site infection compared with 24 hours of antibiotics (very low certainty).

1 finding from 1 review

Anaerobic coverage only vs gram‐positive and gram‐negative coverage

Abdominal surgical site infection · people undergoing laparotomy for penetrating abdominal trauma

It is very uncertain whether anaerobic coverage only changes abdominal surgical site infection compared with gram‐positive and gram‐negative coverage (very low certainty).

1 finding from 1 review

Anaerobic coverage only vs gram‐positive and gram‐negative coverage

Intra‐abdominal infection · people undergoing laparotomy for penetrating abdominal trauma

It is very uncertain whether anaerobic coverage only changes intra‐abdominal infection compared with gram‐positive and gram‐negative coverage (very low certainty).

1 finding from 1 review

Anaerobic coverage only vs gram‐negative and anaerobic coverage

Abdominal surgical site infection · people undergoing laparotomy for penetrating abdominal trauma

It is very uncertain whether anaerobic coverage only changes abdominal surgical site infection compared with gram‐negative and anaerobic coverage (very low certainty).

1 finding from 1 review