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BIOSTATISTICS
Year : 2016  |  Volume : 2  |  Issue : 2  |  Page : 217-219

Understanding the calculation of the kappa statistic: A measure of inter-observer reliability


Department of Community Medicine, School of Public Health, Postgraduate Institute of Medical Education and Research, Chandigarh, India

Correspondence Address:
Nitika
School of Public Health, Postgraduate Institute of Medical Education and Research, Chandigarh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2455-5568.196883

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It is common practice to assess the consistency of diagnostic ratings in terms of “agreement beyond chance.” The kappa coefficient is a popular index of agreement for binary and categorical ratings. This article focuses on the unweighted kappa statistic calculation by providing a stepwise approach that is supplemented with an example. The aim is that health care personnel may better understand the purpose of the kappa statistic and how to calculate it. The following core competencies are addressed in this article: Medical knowledge.


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