W4 q2 p1.docx - Re:Topic 4 DQ 2 Describe the levels of...

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Re:Topic 4 DQ 2Describe the levels of evidence and provide an example of the type of practice change that could result from each.When conducting research using evidence, it is important to understand how credible the evidence truly is. Not all evidence is created equal. The concept can be related to writing a paper. For example, a student wouldn’t want to choose Wikipedia for a credible source when conducting the paper. That is the same concept when choosing which evidence is reliable. NowI found several different pyramids or hierarchies online that ranked levels of evidence.The US National Library of Medicine National Institutes of Health uses this hierarchy:Level I: Uses very high quality randomized controlled trials, with clear cut results (most credible)Level II: uses lesser quality randomized controlled trials, with unclear resultsLevel III: uses therapeutic and prognostic studiesLevel IV: is not as reliable as it uses poorer reference standards, may be using outdated evidence and sources

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