Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

2,355 questions · 2,459 findings · 279 reviews

No studies found 556 · 22.6%GRADE not reported 490 · 19.9%Very low 593 · 24.1%Low 479 · 19.5%Moderate 243 · 9.9%High 98 · 4%

Intervention not reported

Bupropion · adults (aged ≥ 18 years) who smoked cigarettes Components: components of pharmacological and e‐cigarette (EC) interventions for smoking…

The intervention showed no clear difference in bupropion (moderate 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

Helium vs carbon dioxide

Pneumoperitoneum‐related serious adverse events · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether helium changes pneumoperitoneum‐related serious adverse events compared with carbon dioxide (very low certainty).

1 finding from 1 review

Helium vs carbon dioxide

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

Helium showed no clear difference in pain scores (first postoperative day) Visual analogue scale, lower… compared with carbon dioxide (low certainty).

1 finding from 1 review

Nitrous oxide vs carbon dioxide

Procedure‐related general complications · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether nitrous oxide changes procedure‐related general complications (surgical morbidity) compared with carbon dioxide (very low certainty).

1 finding from 1 review

Room air vs carbon dioxide

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · people undergoing laparoscopic general abdominal or gynaecological pelvic surgery under general anaesthesia

It is very uncertain whether room air changes pain scores (first postoperative day) Visual analogue scale, lower… compared with carbon dioxide (very low certainty).

1 finding from 1 review