Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,230 questions · 1,303 findings · 326 reviews · Headline outcomes only

No studies found 73 · 5.6%GRADE not reported 21 · 1.6%Very low 497 · 38.1%Low 403 · 30.9%Moderate 245 · 18.8%High 64 · 4.9%

Higher vs lower FiO2 or targets of arterial oxygenation

All‐cause mortality: range 1 mo to 1 y · adults admitted to the ICU

It is very uncertain whether higher changes all‐cause mortality: range 1 mo to 1 y compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Proportion of participants with 1 or more serious adverse events according to International Conference on Harmonisation Good Clinical Practice (ICH‐GCP) · adults admitted to the ICU

It is very uncertain whether higher changes proportion of participants with ≥ 1 serious adverse events according… compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Lung injury diagnosed after randomisation (composite outcome): range 4 d to 23 d · adults admitted to the ICU

It is very uncertain whether higher changes lung injury diagnosed after randomisation (composite outcome): range… compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Myocardial infarction · adults admitted to the ICU

It is very uncertain whether higher changes myocardial infarction diagnosed after randomisation: range ≤ 90 d compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Stroke · adults admitted to the ICU

It is very uncertain whether higher changes stroke diagnosed after randomisation: range 1 mo to 3 mo compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower FiO2 or targets of arterial oxygenation

Sepsis diagnosed after randomisation: range 28 d to 60 d · adults admitted to the ICU

It is very uncertain whether higher changes sepsis diagnosed after randomisation: range 28 d to 60 d compared with lower FiO2 or targets of arterial oxygenation (very low certainty).

1 finding from 1 review

Higher vs lower omega‐6: additional key outcomes

All‐cause mortality Study duration range 12‐96 months Omega‐6 dose range 1.5%‐24.5% E · adults with or without existing CVD

Higher showed no clear difference in all‐cause mortality Study duration range 12‐96 months Omega‐6 dose… compared with lower omega‐6: primary outcomes (low certainty).

1 finding from 1 review