Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,938 questions · 1,994 findings · 246 reviews · Headline outcomes only

No studies found 490 · 24.6%GRADE not reported 71 · 3.6%Very low 669 · 33.6%Low 446 · 22.4%Moderate 264 · 13.2%High 54 · 2.7%

Film dressing vs exposed wound

SSI Assessment method: undefined method · surgical wounds resulting from clean surgery and healing by primary intention

It is very uncertain whether film dressing changes SSI Assessment method: undefined method compared with exposed wound (very low certainty).

1 finding from 1 review

Film dressing vs exposed wound

Scarring · surgical wounds resulting from clean surgery and healing by primary intention

It is very uncertain whether film dressing changes scarring (further information not reported) compared with exposed wound (very low certainty).

1 finding from 1 review

Film dressing vs exposed wound

Acceptability of dressing to participant · surgical wounds resulting from clean surgery and healing by primary intention

It is very uncertain whether film dressing changes acceptability of dressing to participant compared with exposed wound (very low certainty).

1 finding from 1 review

Silver dressing vs exposed wound

SSI Assessment method: CDC definition of SSI · surgical wounds resulting from a range of surgical procedures with some risk of contamination healing by primary intention

It is very uncertain whether silver dressing changes SSI Assessment method: CDC definition of SSI compared with exposed wound (very low certainty).

1 finding from 1 review

Low‐dose opioid based general anaesthesia vs high‐dose opioid based general anaesthesia

Mortality ‐ Death at any time after surgery · adult cardiac surgical patients

Low‐dose opioid‐based GA showed no clear difference in mortality ‐ Death at any time after surgery compared with high‐dose opioid‐based GA (low certainty).

1 finding from 1 review

Low‐dose opioid based general anaesthesia vs high‐dose opioid based general anaesthesia

Postoperative complications ‐ Myocardial infarction · adult cardiac surgical patients

Low‐dose opioid‐based GA showed no clear difference in postoperative myocardial infarction compared with high‐dose opioid‐based GA (low certainty).

1 finding from 1 review