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Hierarchy of evidence (polit and beck, 2014). rct: randomised
Polit beckAmazon.co.uk: polit and beck: books Hierarchy of evidence (polit and beck, 2014). rct: randomisedEvidence hierarchy beck polit rct controlled randomised.
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Amazon.co.uk: polit and beck: Books
Hierarchy of evidence (Polit and Beck, 2014). RCT: randomised
Essentials of Nursing Research: Appraising Evidence for Nursing
Amazon.co.uk: polit and beck: Books
Figur 6.1. Evidenspyramid