Definition of recommendation levels
Recommendation level | Definition |
---|---|
A | When there is a clear rationale for the recommendations:When manifold randomized controlled trials that can be generalized because they have sufficient test or meta-analysis results support a recommendation. |
B | When there is a reliable basis for the recommendations:When reasonable grounds support this through well-performed cohort studies or patient—control group studies. |
C | When there is a possible basis for the recommendations:When relevant grounds are seen through randomized clinical studies or case reports and observational studies carried out in a small institution, despite their inherent unreliability. |
E | Expert recommendations:There is no basis to support the recommendations, but they are supported by expert opinion or expert clinical experience. |