Question
Describe the levels of evidence and provide an example of the type of practice change that could result from each.
Requirement:
Class,
Please make sure that your examples fall into one of the categories below.
Please identify the level of evidence and then state your example of the
research study which belongs into that level.
Nursing Resources: Levels of Evidence (I-VII)
Rating System for the Hierarchy of Evidence: Quantitative Questions
Level I: Evidence from a systematic review of all relevant randomized controlled
trials (RCT’s), or evidence-based clinical practice guidelines based on systematic
reviews of RCT’s
Level II: Evidence obtained from at least one well-designed Randomized
Controlled Trial (RCT)
Level III: Evidence obtained from well-designed controlled trials without
randomization, quasi-experimental Level IV: Evidence from well-designed case-control and cohort studies Level V: Evidence from systematic reviews of descriptive and qualitative studies Level VI: Evidence from a single descriptive or qualitative study Level VII: Evidence from the opinion of authorities and/or reports
of expert committees
Above information from “Evidence-based practice in nursing
& healthcare: a guide to best practice” by Bernadette M. Melnyk
and Ellen Fineout-Overholt. 2005.
