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Appraising Evidence for Nursing Practice
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FIGURE 2.1 • Evidence hierarchy: levels of evidence.
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, Essentials of Nursing Research
Appraising Evidence for Nursing Practice
• Denise F. Polit, PhD, FAAN
President, Humanalysis, Inc.
Saratoga Springs, New York
Professor, Griffith University School of Nursing
Brisbane, Australia
www.denisepolit.com a
• Cheryl Tatano Beck, DNSc, CNM, FAAN
Distinguished Professor, School of Nursing, University of
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