AASLD guidelines classification scheme

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

AASLD (American Association of Study of Liver Disease) provides recommendations for various liver diseases. It develops clinical practice guidelines which are supported by a high level of scientific evidence. They assist in appropriate health care to patients. The clinical practice guidelines should not be looked at as "standards of care". They are provided to aid in the diagnosis and management of liver diseases.[1]

Classification of Recommendations

AASLD recommendations are classified into five grades based on quality of evidence.[2]

Grade Definition
Grade I Randomized controlled trials
Grade II - 1 Controlled trials without randomization
Grade II - 2 Cohort or case-control analytic studies
Grade II - 3 Multiple time series, dramatic uncontrolled experiments
Grade III Opinions of respected authorities, descriptive epidemiology

Adapted Classification

AASLD has adapted the recommendations classification from American Heart Association recommendations classification. The adapated classification is as follows:

Classification Description
Class I Conditions for which there is evidence and/or general agreement that a given diagnostic evaluation, 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 diagnostic evaluation, procedure or treatment.
Class IIa Weight of evidence/opinion is in favor of usefulness/ efficacy.
Class IIb Usefulness/efficacy is less well established by evidence/opinion.
Class III Conditions for which there is evidence and/or general agreement that a diagnostic evaluation/procedure/ treatment is not useful/effective and in some cases may be harmful.

References

  1. "American Association for the Study of Liver Diseases: Welcome to AASLD". Retrieved 2012-10-25.
  2. Woolf SH, Sox HC (1991). "The Expert Panel on Preventive Services: continuing the work of the U.S. Preventive Services Task Force". American Journal of Preventive Medicine. 7 (5): 326–30. PMID 1790039. |access-date= requires |url= (help)

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