question archive Describe the "levels of evidence" and provide an example of the type of practice change that could result from each
Describe the "levels of evidence" and provide an example of the type of practice change that could result from each
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Describe the "levels of evidence" and provide an example of the type of practice change that could result from each.
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LEVEL 1 - Evidence from a systematic review or meta-analysis of all relevant RCTs (randomized controlled trial) or evidence-based clinical practice guidelines based on systematic reviews of RCTs or three or more RCTs of good quality that have similar results.
LEVEL 2 - Evidence obtained from at least one well-designed RCT (e.g. large multi-site RCT).
LEVEL 3 - Evidence obtained from well-designed controlled trials without randomization (i.e. quasi-experimental).
LEVEL 4 - Evidence from well-designed case-control or cohort studies
LEVEL 5 - Evidence from systematic reviews of descriptive and qualitative studies (meta-synthesis).
LEVEL 6 - Evidence from a single descriptive or qualitative study.
LEVEL 7 - Evidence from the opinion of authorities and/or reports of expert committees.
