Table 5 Grades of recommendations
From: A systematic review of the role of videolaryngoscopy in successful orotracheal intubation
A | At least one metanalysis, systematic review, or RCT rated as 1++ and directly applicable to the target population, or A systematic review of RCTs or a body of evidence consisting principally of studies rated as 1+ directly applicable to the target population and demonstrating overall consistency of results |
B | A body of evidence including studies rated as 2++ directly applicable to the target population and demonstrating overall consistency of results, or extrapolated evidence from studies rated as 1++ or 1+ |
C | A body of evidence including studies rated as 2+ directly applicable to the target population and demonstrating overall consistency of results or extrapolated evidence from studies rated as 2++ |
D | Evidence level 3 or 4, or extrapolated evidence from studies rated as 2+ |