ADA guidelines classification scheme
The American Diabetes Association (ADA) developed a grading system to grade the quality of scientific evidence to support the ADA recommendations for all position statements.
Evidence Grading System
ADA has developed a grading system for leveling the standards of medical care in diabetes.
|Level of evidence||Desciption|
|A||❑ Clear evidence from well-conducted, generalizable randomized controlled trials
❑ Compelling nonexperimental evidence, i.e., “all or none” rule developed by the
❑ Supportive evidence from well-conducted randomized controlled trials that are
|B||❑ Supportive evidence from well-conducted cohort studies
❑ Supportive evidence from a well-conducted case-control study
|C||❑ Supportive evidence from poorly controlled or uncontrolled studies
❑ Conflicting evidence with the weight of evidence supporting the
|E||❑ Expert consensus or clinical experience|