Al-Zou'bi, L. M.; Clark, Robert Graham; Steel, D. G. - 2009
estimated regression coefficients. The strategy is based on testing the null hypothesis that random effect variance component is … one-level linear model. Otherwise, the estimated variance is based on the linear mixed model, or, alternatively the Huber …-White robust variance estimator is used. A simulation study is used to show that the adaptive approach provides reasonably correct …