Suggested Walkovers between Taxonomies for Assessing the Strength of a Recommendation Based on a Body of Evidence
| SORT | CEBM | BMJ’s Clinical Evidence |
|---|---|---|
| A. Recommendation based on consistent and good quality patient-oriented evidence | A. Consistent level 1 studies | Beneficial |
| B. Recommendation based on inconsistent or limited-quality patient-oriented evidence | B. Consistent level 2 or 3 studies or extrapolations from level 1 studies | Likely to be beneficial Likely to be ineffective or harmful (recommendation against) |
| C. Level 4 studies or extrapolations from level 2 or 3 studies | Unlikely to be beneficial (recommendation against) | |
| C. Recommendation based on consensus, usual practice, disease-oriented evidence, case series for studies of treatment or screening, and/or opinion | D. Level 5 evidence or troublingly inconsistent or inconclusive studies of any level | Unknown effectiveness |
SORT, Strength Of Evidence Taxonomy; CEBM, Centre for Evidence-Based Medicine; BMJ, BMJ Publishing Group.