Agreement and Kappa-Type Indices
نویسندگان
چکیده
منابع مشابه
Understanding interobserver agreement: the kappa statistic.
Items such as physical exam findings, radiographic interpretations, or other diagnostic tests often rely on some degree of subjective interpretation by observers. Studies that measure the agreement between two or more observers should include a statistic that takes into account the fact that observers will sometimes agree or disagree simply by chance. The kappa statistic (or kappa coefficient) ...
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Introduction This module computes power and sample size for the test of agreement between two raters using the kappa statistic. The power calculations are based on the results in Flack, Afifi, Lachenbruch, and Schouten (1988). Calculations are based on ratings for k categories from two raters or judges. You are able to vary category frequencies on a single run of the procedure to analyze a wide...
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Although the κ statistic has been used widely as an indicator of rater agreement, there have been some concerns about the existence of different definitions and some peculiar results involving skewed data. This note evaluates different definitions of κ and also demonstrates that the problem with directly comparing κ values, especially for skewed data, can be avoided by comparing their significa...
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Background Cohen's Kappa is the most used agreement statistic in literature. However, under certain conditions, it is affected by a paradox which returns biased estimates of the statistic itself. Objective The aim of the study is to provide sufficient information which allows the reader to make an informed choice of the correct agreement measure, by underlining some optimal properties of Gwet...
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The kappa distributions, or their equivalent, the q-exponential distributions, are the natural generalization of the classical Boltzmann-Maxwell distributions, applied to the study of the particle populations in collisionless space plasmas. A huge step in the development of the theory of kappa distributions and their applications in space plasma physics has been achieved with the discovery that...
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ژورنال
عنوان ژورنال: The American Statistician
سال: 2007
ISSN: 0003-1305,1537-2731
DOI: 10.1198/000313007x192392