Concordance correlation coefficient
In statistics, the concordance correlation coefficient measures the agreement between two variables, e.g., to evaluate reproducibility or for inter-rater reliability.
Lawrence Lin has the form of the concordance correlation coefficient as[1]
It is nearly identical to a some of the measures called intra-class correlations, and comparisons of the concordance correlation coefficient with an "ordinary" intraclass correlation on different data sets found only small differencies between the two correlations, in one case on the third decimal.[2]
It has also been stated[3] that the ideas for concordance correlation coefficient "are quite similar to results already published by Krippendorff[4] in 1970".
References
- ^ Lawrence I-Kuei Lin (1989). "A concordance correlation coefficient to evaluate reproducibility". Biometrics. 45 (1): 255–268. PMID 2720055.
{{cite journal}}: Check date values in:|year=(help); Unknown parameter|month=ignored (help)CS1 maint: year (link) - ^ Carol A. E. Nickerson (1997). "A Note on "A Concordance Correlation Coefficient to Evaluate Reproducibility". Biometrics. 53 (4): 1503–1507.
{{cite journal}}: Check date values in:|year=(help); Unknown parameter|month=ignored (help)CS1 maint: year (link) - ^ Reinhold Müller & Petra Büttner (1994). "A critical discussion of intraclass correlation coefficients". Statistics in Medicine. 13 (23–24): 2465–2476. doi:10.1002/sim.4780132310. PMID 7701147.
{{cite journal}}: Check date values in:|year=(help); Unknown parameter|month=ignored (help)CS1 maint: year (link) - ^ Klaus Krippendorff (1970). "Bivariate agreement coefficients for reliability of data". In E. F. Borgatta (ed.). Sociological Methodology. Vol. 2. San Francisco: Jossey-Bass. pp. 139–150. doi:10.2307/270787.
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