Evidence-Based Medicine is the conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients. The practice of evidence based medicine means integrating individual clinical expertise with the best available external clinical evidence from systematic research.
Sackett DL, Rosenberg WMC, Gray JAM, Haynes RB, Richardson WS. Evidence based medicine: what it is and what it isn't. BMJ. 1996 Jan 13; 312 (7023): 71-2.
Evidence-Based Nursing - A way of providing nursing care that is guided by the integration of the best available scientific knowledge with nursing expertise. This approach requires nurses to critically assess relevant scientific data or research evidence, and to implement high-quality interventions for their nursing practice. (NLM PubMed MeSH)
Evidence-based practice consists of five steps:
1. Ask a searchable clinical question;
2. Find the best evidence to answer the question;
3. Appraise the evidence;
4. Apply the evidence with clinical expertise, taking the patient's wants/needs into consideration;
5. Evaluate the effectiveness and efficiency of the process.
Source: Strauss, S. E. Evidence-Based Medicine: How to Practice and Teach EBM. New York: Churchill Livingstone, 2005.