Internal evidence and external evidence are both research and answers to be able to provide the best evidence-based practice. Internal evidence is made of what knowledge individuals have gain through experience. You are able to collect internal evidence with through practice, assessments, education, and experience. Internal evidence can also be gained from the patient. Such as patient preferences or patient background. But just because internal evidence has guided decision making in the past does not mean that it is evidence based best practice. External evidence is gained through research. This research is usually compiled of critical appraisal, clinical trials, peer reviewed, and synthesis of the most relevant research. External evidence is what helps guide healthcare professionals to make the best evidence-based decisions
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