multilevel (version 2.5)

ICC2: Function to Estimate Intraclass Correlation Coefficient 2 or ICC(2) from an aov model

Description

This function calculates the Intraclass Correlation Coefficient 2 or ICC(2) from an ANOVA model. This value represents the reliability of the group means.

Usage

ICC2(object)

Arguments

object

An ANOVA (aov) object from an one-way analysis of variance.

Value

References

Bliese, P. D. (2000). Within-group agreement, non-independence, and reliability: Implications for data aggregation and Analysis. In K. J. Klein & S. W. Kozlowski (Eds.), Multilevel Theory, Research, and Methods in Organizations (pp. 349-381). San Francisco, CA: Jossey-Bass, Inc.

Bartko, J.J. (1976). On various intraclass correlation reliability coefficients. Psychological Bulletin, 83, 762-765.

See Also

ICC1 aov

Examples

   data(bh1996)
   hrs.mod<-aov(HRS~as.factor(GRP),data=bh1996)
   ICC2(hrs.mod)