When engaging in evidence-based practice, the nurse would use which of the following criteria to determine the relevance of the study or report?
a. Level of evidence
b. Clearinghouse to purge outdated research
c. Quasi-experimental pre-post study research
d. Scale for grading research for recommendation
A
Level of evidence identifies the strength or quality of evidence generated from a study or report. Level
I includes systematic reviews or meta-analyses of randomized controlled trials (RCTs) and
evidence-based clinical practice guidelines are considered to be the strongest level of evidence upon
which to guide practice decisions. Level II in the evidence hierarchy is that evidence which is
generated by at least one well-designed RCT. An RCT is an experimental research study in which
subjects are randomly assigned to experimental and control groups.
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