Table 1.
Category, Grade | Definition |
---|---|
Strength of recommendation | |
A | Good evidence to support a recommendation for use |
B | Moderate evidence to support a recommendation for use |
C | Poor evidence to support a recommendation |
Quality of evidence | |
I | Evidence from ≥1 properly randomized, controlled trial |
II | Evidence from ≥1 well‐designed clinical trial, without randomization; from cohort or case‐controlled analytical studies (preferably from >1 center); from multiple time‐series; or from dramatic results from uncontrolled experiments |
III | Evidence from opinions of respected authorities, based on clinical experience, descriptive studies, or reports of expert committees |
NOTE. Adapted from Canadian Task Force on the Periodic Health Examination. 2