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A two-stage model for growth curves which leads to Rao's covariance adjusted estimators
Department of Mathematics, Imperial College London
It is well known that the unweighted estimator for growth curve parameters may be justified by a random effects model. We show that the more complicated adjusted estimators suggested by Rao may also be justified in terms of a two-stage model whose interpretation is simple.
Key Words: Bayes theory Covariance adjustment Growth curve Hierarchical model Linear model