A computer program for calculating kappa: application to interexaminer agreement in periodontal research

W. M. Boushka, Y. N. Marinez, T. J. Prihoda, R. Dunford, G. M. Barnwell

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The kappa statistic is a frequently used measure of interobserver agreement when two or more observers are asked to rate the same items or subjects on some criterion. The advantage of the kappa statistic over simple agreement is that it corrects for agreement by chance. In dental research, because multiple examiners may be involved in assessing subject variables such as attachment loss, bleeding on probing, or periodontal pocket depth, some statistical measure of agreement is needed. The program described here was developed for estimating agreement among periodontal examiners, but also could be used in clinical teaching applications. Assumptions and limitations of the kappa statistic are discussed. Examples of outputs illustrate applications of the program.

Original languageEnglish (US)
Pages (from-to)35-41
Number of pages7
JournalComputer Methods and Programs in Biomedicine
Volume33
Issue number1
DOIs
StatePublished - Sep 1990

Keywords

  • Attachment loss
  • Bleeding on probing
  • Interexaminer agreement
  • Kappa statistic
  • Periodontal research
  • Pocket depth

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Health Informatics

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