The intra-class correlation coefficient is a general representation of the ratio of effect variance relative to effect-plus-error variance. From: Encyclopedia of Social Measurement, 2005 About this pageSet alert
Definition The intraclass correlation coefficient is a measure of the correlation between individuals clustered within the same context. It is the proportion of the total unexplained variation in an outcome that is attributable to differences between the contexts. ...
The test theorist鈥檚 definition of reliability is argued to conflict with intuitive notions of this concept. Sensitivity coefficient is proposed as a more appropriate term for the classical reliability coefficient.David G. WastellComputational Group Medical SchoolGeoffrey R. Barker...
Intraclass correlation
We will now explain this formula. From Definition 1 inTwo Factor ANOVA without Replicationwe have the model The intraclass correlation is then Thus there are three types of variability: var(β): variability due to differences in the subjects (i.e. the wines). ...
definition:unbiased but complexformulaThe earliest work on intraclasscorrelations focused on the case ofpaired measurements, and the firstintraclass correlation (ICC) statistics tobe proposed were modifications of theinterclass correlation (Pearsoncorrelation).Consider a data set consisting of N paired data...
If you just want an estimate of reliability, you can use test-retest reliability (a correlation between scores at time 1 and time 2), but it will by definition assume that there is no error in your rater’s judgments (which may or may not be a safe assumption). Jason Ki...
Intraclass correlation coefficient (ICC) is a widely used reliability index in test-retest, intrarater, and interrater reliability analyses. This article introduces the basic concept of ICC in the content of reliability analysis. Discussion for Researchers There are 10 forms of ICCs. Because each fo...
The rank ICC is simply interpreted as the rank correlation between a random pair of observations from the same cluster. We also extend the definition when the underlying distribution has more than two hierarchies. We describe estimation and inference procedures, show the asymptotic properties of our...
We propose a Bayesian test that allows the incorporation of previous information on the variance components used in the definition of the intraclass correlation coefficients and may be generalized to situations where normality does not hold. We develop computational algorithms to implement the proposed ...