An alternative test for the equality of several intraclass correlation coefficients under unequal family sizes based on several independent multinormal samples is proposed. It was found that the alternative test consistently and reliably produced results superior to those of Likelihood ratio test (LRT) proposed by Bhandary and Alam (2000) and Fmax test proposed by Bhandary and Fujiwara (2006) in terms of power for various combinations of intraclass correlation coefficient values and also the alternative test stays closer to the significance level under null hypothesis compared to the Likelihood ratio test and Fmax test. This alternative test is computationally very simple and also can be used for both small sample and large sample situations. An example with real life data is presented.
Bhandary, Madhusudan and Fujiwara, Koji
"An Alternative Test for the Equality of Intraclass Correlation Coefficients under Unequal Family Sizes for Several Populations,"
Journal of Modern Applied Statistical Methods: Vol. 13
, Article 4.
Available at: http://digitalcommons.wayne.edu/jmasm/vol13/iss1/4