Table 1 Classes of recommendation
Classes of recommendations | Definition | Suggested wording to use |
|---|---|---|
Class I | Evidence and/or general agreement that a given treatment or procedure is beneficial, useful, effective | Is recommended/is indicated |
Class II | Conflicting evidence and/or a divergence of opinion about the usefulness/efficacy of the given treatment or procedure | |
• Class IIa | Weight of evidence/opinion is in favour of usefulness/efficacy | Should be considered |
• Class IIb | Usefulness/efficacy is less well established by evidence/opinion | May be considered |
Class III | Evidence or general agreement that given treatment or procedure is not useful/effective and in some cases may be harmful | Is not recommended |