"the integration of best research evidence with clinical expertise and patient values." (Sackett, David L., et al., Evidence-based medicine: how to practice and teach EBM. New York: Churchill Livingstone, 2000. p. 1)
1) Processing information into high levels of evidence takes time, and there is no guarantee that evidence exists at all levels for a specific clinical question.
2) Start with the highest level of evidence available. High-level resources build upon resources found in the lowere levels of the pyramid to provide concise and up to date information.
3) Preappraised resources have a strict filtering process to insure that only high-quality information is included. Good resources will make their filtering processes readily available to users.