Figure 3
From: An evidence-based recommendation on bed head elevation for mechanically ventilated patients
Summary estimates of associations between treatment and control group: ICU mortality. 1GRADE Working Group grades of evidence: high quality, further research is very unlikely to change confidence in the estimate of effect; moderate quality, further research is likely to have an important impact on confidence in the estimate of effect and may change the estimate; low quality, further research is very likely to have an important impact on confidence in the estimate of effect and is likely to change the estimate; very low quality, the estimate effect is very uncertain. CI, confidence interval; M-H, Mantel Haenszel test.