The Concordance Correlation Coefficient for Repeated Measures Estimated by Variance Components |
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| Authors: | Josep L Carrasco Tonya S King Vernon M Chinchilli |
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| Institution: | 1. Biostatistics, Department of Public Health , University of Barcelona , Barcelona, Spain jlcarrasco@ub.edu;3. Biostatistics, Department of Public Health Sciences , Penn State University , Hershey, Pennsylvania |
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| Abstract: | The concordance correlation coefficient (CCC) is an index that is commonly used to assess the degree of agreement between observers on measuring a continuous characteristic. Here, a CCC for longitudinal repeated measurements is developed through the appropriate specification of the intraclass correlation coefficient from a variance components linear mixed model. A case example and the results of a simulation study are provided. |
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| Keywords: | Concordance Linear mixed models Longitudinal analysis Variance components |
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