Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

146 questions · 159 findings · 9 reviews · Colorectal

No studies found 15 · 9.4%GRADE not reported 1 · 0.6%Very low 74 · 46.5%Low 36 · 22.6%Moderate 29 · 18.2%High 4 · 2.5%

Laparoscopic vs open surgery

Late overall morbidity (after the first 30 postoperative days: within 6 months) · patients with sigmoid diverticulitis

It is very uncertain whether laparoscopic changes late overall morbidity (after the first 30 postoperative days:… compared with open surgery (very low certainty).

1 finding from 1 review

Laparoscopic vs open surgery

Late overall mortality (after the first 30 postoperative days) · patients with sigmoid diverticulitis

It is very uncertain whether laparoscopic changes late overall mortality (after the first 30 postoperative days) compared with open surgery (very low certainty).

1 finding from 1 review

Nitrous oxide vs carbon dioxide

Cardiopulmonary complications · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether nitrous oxide changes cardiopulmonary complications compared with carbon dioxide (very low certainty).

1 finding from 1 review