Design and created by Guideline Central in participation with the American College of Cardiology and American Heart Association.
American College of Cardiology
American Heart Association
Publication Date: Mar 13, 2026
Page Last Updated: Jun 2, 2026
| Class (Strength) of Recommendation |
|---|
| CLASS 1 (STRONG) Benefit >>> Risk |
Suggested phrases for writing recommendations:
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| CLASS 2a (MODERATE) Benefit >> Risk |
Suggested phrases for writing recommendations:
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| CLASS 2b (WEAK) Benefit ≥ Risk |
Suggested phrases for writing recommendations:
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| CLASS 3: No Benefit (MODERATE) (Generally, LOE A or B use only) Benefit = Risk |
Suggested phrases for writing recommendations:
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| CLASS 3: Harm (STRONG) Risk > Benefit |
Suggested phrases for writing recommendations:
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| Level (Quality) of Evidence‡ |
|---|
| LEVEL A |
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| LEVEL B-R (Randomized) |
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| LEVEL B-NR (Nonrandomized) |
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| LEVEL C-LD (Limited Data) |
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| LEVEL C-EO (Expert Opinion) |
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COR and LOE are determined independently (any COR may be paired with any LOE).
A recommendation with LOE C does not imply that the recommendation is weak. Many important clinical questions addressed in guidelines do not lend themselves to clinical trials. Although RCTs are unavailable, there may be a very clear clinical consensus that a particular test or therapy is useful or effective.
* The outcome or result of the intervention should be specified (an improved clinical outcome or increased diagnostic accuracy or incremental prognostic information).
† For comparative-effectiveness recommendations (COR I and IIa; LOE A and B only), studies that support the use of comparator verbs should involve direct comparisons of the treatments or strategies being evaluated.
‡ The method of assessing quality is evolving, including the application of standardized, widely used, and preferably validated evidence grading tools; and for systematic reviews, the incorporation of an Evidence Review Committee.
COR indicates Class of Recommendation; EO, expert opinion; LD, limited data; LOE, Level of Evidence; NR, nonrandomized; R, randomized; RCT, randomized controlled trial.
Blumenthal, RS, Morris, PB, Gaudino, M, Johnson, HM, Anderson, TS, Bittner, VA, Blankstein, R, Brewer, LC, Cho, L, de Ferranti, SD, Gianos, E, Gluckman, TJ, Gradney, K, Isiadinso, I, Lloyd-Jones, DM, Marrs, JC, Martin, SS, McLain, KH, Mehta, LS, Mora, S, Mulugeta, WM, Natarajan, P, Navar, AM, Orringer, CE, Polonsky, TS, Reynolds, HR, Saseen, JJ, Shapiro, MD, Soffer, DE, Tynes, SA, Villavaso, CD, Virani, SS, Wilkins, JT. 2026 ACC/AHA/AACVPR/ABC/ACPM/ADA/AGS/ APhA/ASPC/NLA/PCNA guideline on the management of dyslipidemia: a report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. [published online ahead of print March 13, 2026]. J Am Coll Cardiol. doi: 10.1016/j.jacc.2025.11.016.
Copublished in Circulation. doi: 10.1161/CIR.0000000000001423
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