Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,017 questions · 1,061 findings · 131 reviews

No studies found 193 · 18.2%GRADE not reported 65 · 6.1%Very low 237 · 22.3%Low 325 · 30.6%Moderate 187 · 17.6%High 54 · 5.1%

Epidural analgesia vs intravenous patient‐controlled analgesia

All‐cause mortality rate at 30 days · adults having abdominal surgery

Epidural analgesia showed no clear difference in all‐cause mortality rate at 30 days compared with intravenous patient‐controlled analgesia (low certainty).

1 finding from 1 review

Epidural analgesia vs intravenous patient‐controlled analgesia

Failure of analgesic technique requiring alternative approach (assessed at any time) · adults having abdominal surgery

Epidural analgesia probably leads to higher failure of analgesic technique requiring alternative approach… compared with intravenous patient‐controlled analgesia (moderate certainty).

1 finding from 1 review

Epidural analgesia vs intravenous patient‐controlled analgesia

Adverse events (assessed at any time during · adults having abdominal surgery

Epidural analgesia showed no clear difference in adverse events (assessed at any time during compared with intravenous patient‐controlled analgesia (low certainty).

1 finding from 1 review

Oral vs intravenous fluoropyrimidines

Grade ≥ 3 neutropenia/granulocytopenia · Patients treated with palliative intent for inoperable advanced or metastatic colorectal cancer with chemotherapy

Oral may leads to lower grade ≥ 3 neutropenia/granulocytopenia compared with intravenous fluoropyrimidines (low certainty).

1 finding from 1 review

Oral vs intravenous fluoropyrimidines

Grade ≥ 3 neutropenia/granulocytopenia · Patients treated with curative intent for colorectal cancer with neoadjuvant and/or adjuvant chemotherapy

Oral probably leads to lower grade ≥ 3 neutropenia/granulocytopenia compared with intravenous fluoropyrimidines (moderate certainty).

1 finding from 1 review

Inhalational anaesthesia vs intravenous anaesthesia

Nausea · adults undergoing transabdominal robotic assisted laparoscopic surgery

Inhalational anaesthesia may leads to lower presence of nausea compared with intravenous anaesthesia (low certainty).

3 findings from 1 review

Inhalational anaesthesia vs intravenous anaesthesia

Nausea and vomiting · adults undergoing transabdominal robotic assisted laparoscopic surgery

It is very uncertain whether inhalational anaesthesia changes nausea‐vomiting rate at 1 hour compared with intravenous anaesthesia (very low certainty).

2 findings from 1 review