View source for EBQ:Evidence Levels

==Recommendation Grades<ref>US Preventive Services Task Force|U.S. Preventive Services Task Force. http://www.uspreventiveservicestaskforce.org/uspstf/grades.htm</ref>==
* '''Level A'''
**Good scientific evidence suggests that the benefits of the clinical service substantially outweigh the potential risks. Clinicians should discuss the service with eligible patients.
* '''Level B'''
**At least fair scientific evidence suggests that the benefits of the clinical service outweighs the potential risks. Clinicians should discuss the service with eligible patients.
* '''Level C'''
**At least fair scientific evidence suggests that there are benefits provided by the clinical service, but the balance between benefits and risks are too close for making general recommendations. Clinicians need not offer it unless there are individual considerations.
* '''Level D'''
**At least fair scientific evidence suggests that the risks of the clinical service outweighs potential benefits. Clinicians should not routinely offer the service to asymptomatic patients.
* '''Level I'''
**Scientific evidence is lacking, of poor quality, or conflicting, such that the risk versus benefit balance cannot be assessed. Clinicians should help patients understand the uncertainty surrounding the clinical service.

==Sources==
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[[Category:EBQ]]