Journal
CARDIOVASCULAR DIAGNOSIS AND THERAPY
Volume 7, Issue 3, Pages 317-324Publisher
AME PUBL CO
DOI: 10.21037/cdt.2017.03.12
Keywords
Observer variability; statistics
Categories
Funding
- National Space Biomedical Research Institute through NASA [NCC9-58]
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Some form of the assessment of observer variability may be the most frequent statistical task in medical literature. Still, very little attempt is made to make the reported methods uniform and clear to the reader. This paper provides overview of various measures of observer variability, and a rationale of why using standard error of measurement (SEM) is preferable to other measures of observer variability. The supplemental file contains examples on how to design a proper repeatability and reproducibility assessment, determine appropriate sample size, and test for significance of its findings.
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