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Measurement of Observer Agreement

Kundel, Harold L., Polansky, Marcia·2003·Radiology

Abstract

Statistical measures are described that are used in diagnostic imaging for expressing observer agreement in regard to categorical data. The measures are used to characterize the reliability of imaging methods and the reproducibility of disease classifications and, occasionally with great care, as the surrogate for accuracy. The review concentrates on the chance-corrected indices, kappa and weighted kappa. Examples from the imaging literature illustrate the method of calculation and the effects of both disease prevalence and the number of rating categories. Other measures of agreement that are used less frequently, including multiple-rater kappa, are referenced and described briefly.

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Metadata

Authors
Kundel, H. L., & Polansky, M.
Venue
Radiology
Published
2003-08
Volume
228
Issue
2
Pages
303-308
ISSN
  • 0033-8419 (ISSN-L)
  • 1527-1315
OpenAlex
W2101073067
Cited by
1,492
References
4
FWCI
49.71
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Measurement of Observer Agreement. https://app.cochat.ai/papers/10.1148/radiol.2282011860
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Kundel, H. L., & Polansky, M. (2003). Measurement of Observer Agreement. Radiology. https://doi.org/10.1148/radiol.2282011860

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