Max Rady College of Medicine

Term: Intraclass Correlation Coefficient (ICC)

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Glossary Definition

Last Updated: 2009-02-02


The intraclass (sometimes called intracluster) correlation coefficient (ICC) tells us how similar elements in the same cluster (group) are. It provides a measure of homogeneity within the clusters (Lohr, Sharon L. (1999)). It ranges from 0 to 1 with values closer to 1 indicating greater homogeneity.

Related concepts 

Term used in 

  • Lohr SL. Sampling: Design and Analysis. Pacific Grove, CA: Duxbury Press; 1999.(View)

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