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NSG 365 (Hamilton): Evidence-Based Practice

Levels of Evidence

Chart showing the 7 levels

Where to Search for Evidence - Miami University Libraries

Levels of Evidence, Highest Listed First

Where to Search

  1. Cochrane Systematic Reviews

  2. Other Systematic Reviews & Meta-Analyses

  3. Evidence Guidelines and Summaries

  4. RCTs, Case Cohorts, Control Studies

  5. Clinical Research Critiques

  6. Other Reviews of the Literature

  7. Case Reports, Case Series

  8. Clinical Reference Texts

Modified from Evidence-Based Practice Tools, Health Sciences Library, University of Washington, University Libraries

Evidence-Based Practice

Evidence-Based Practice (EBP) involves 3 aspects:  

  • the highest level of research evidence
  • the provider's expertise and experience
  • the patient's preference and values.  

EBP process includes 6 steps:  

  • Ask
  • Search
  • Appraise
  • Integrate
  • Evaluate
  • Disseminate