Intraclass correlation – A discussion and demonstration of basic features
Fig 2
Relation between ICC models and ICC formulas.
Three statistical models used in the intraclass correlation theory are indicated: Model 1 (one-way model); Model 2 (two-way random model); and Model 3 (two-way mixed model). The figure shows the relation between these models and the three well-known sample ICC formulas, i.e. ICC(1), ICC(A,1) and ICC(C,1).