| Classes of recommendation . | Definition . | Suggested wording . |
|---|---|---|
| Class I | Evidence and/or general agreement that a given treatment or procedure is beneficial, useful and 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/general agreement that the given treatment/procedure is not useful/effective and sometimes maybe harmful | Is not recommended |
| Classes of recommendation . | Definition . | Suggested wording . |
|---|---|---|
| Class I | Evidence and/or general agreement that a given treatment or procedure is beneficial, useful and 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/general agreement that the given treatment/procedure is not useful/effective and sometimes maybe harmful | Is not recommended |
| Classes of recommendation . | Definition . | Suggested wording . |
|---|---|---|
| Class I | Evidence and/or general agreement that a given treatment or procedure is beneficial, useful and 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/general agreement that the given treatment/procedure is not useful/effective and sometimes maybe harmful | Is not recommended |
| Classes of recommendation . | Definition . | Suggested wording . |
|---|---|---|
| Class I | Evidence and/or general agreement that a given treatment or procedure is beneficial, useful and 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/general agreement that the given treatment/procedure is not useful/effective and sometimes maybe harmful | Is not recommended |
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