ACC AHA guidelines classification scheme: Difference between revisions
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==Classification of Recommendations== | ==Classification of Recommendations== | ||
* '''Class I:''' Conditions for which there is evidence and/or general agreement that a given procedure or treatment is beneficial, useful, and effective. | *'''Class I: Benefit >>> Risk''' | ||
:*Conditions for which there is evidence and/or general agreement that a given procedure or treatment is beneficial, useful, and effective. | |||
* '''Class II:''' Conditions for which there is conflicting evidence and/or a divergence of opinion about the usefulness/efficacy of a procedure or treatment. | *'''Class II:''' Conditions for which there is conflicting evidence and/or a divergence of opinion about the usefulness/efficacy of a procedure or treatment. | ||
* '''Class IIa:''' Weight of evidence/opinion is in favor of usefulness/efficacy. | *'''Class IIa: Benefit >> Risk''' | ||
:*Weight of evidence/opinion is in favor of usefulness/efficacy. | |||
* '''Class IIb:''' Usefulness/efficacy is less well established by evidence/opinion. | *'''Class IIb: Benefit ≥ Risk''' | ||
:*Usefulness/efficacy is less well established by evidence/opinion. | |||
* '''Class III:''' Conditions for which there is evidence and/or general agreement that a procedure/treatment is not useful/effective and in some cases may be harmful. | *'''Class III: Risk ≥ Benefit''' | ||
:*Conditions for which there is evidence and/or general agreement that a procedure/treatment is not useful/effective and in some cases may be harmful. | |||
Use the '''Level of Evidence''' designation to indicate the strength of the data associated with that recommendation. | Use the '''Level of Evidence''' designation to indicate the strength of the data associated with that recommendation. |
Revision as of 02:25, 25 August 2011
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
The Class designation is used to indicate whether a therapy is recommended or not and the certainty surrounding that recommendation.
Classification of Recommendations
- Class I: Benefit >>> Risk
- Conditions for which there is evidence and/or general agreement that a given procedure or treatment is beneficial, useful, and effective.
- Class II: Conditions for which there is conflicting evidence and/or a divergence of opinion about the usefulness/efficacy of a procedure or treatment.
- Class IIa: Benefit >> Risk
- Weight of evidence/opinion is in favor of usefulness/efficacy.
- Class IIb: Benefit ≥ Risk
- Usefulness/efficacy is less well established by evidence/opinion.
- Class III: Risk ≥ Benefit
- Conditions for which there is evidence and/or general agreement that a procedure/treatment is not useful/effective and in some cases may be harmful.
Use the Level of Evidence designation to indicate the strength of the data associated with that recommendation.
Level of Evidence
- Level of Evidence A: Data derived from multiple randomized clinical trials or meta-analyses.
- Level of Evidence B: Data derived from a single randomized trial, or nonrandomized studies.
- Level of Evidence C: Only consensus opinion of experts,case studies, or standard-of-care.
Applying Classification of Recommendations and Level of Evidence
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