Miscellanea |
Rank-based regression for analysis of repeated measures
CSIRO Mathematical and Information Sciences, Leeuwin Centre, 65 Brockway Road, Floreat, Western Australia 6014, Australia. you-gan.wang{at}csiro.au, min.zhu{at}csiro.au
We consider rank-based regression models for repeated measures. To account for possible withinsubject correlations, we decompose the total ranks into between- and within-subject ranks and obtain two different estimators based on between- and within-subject ranks. A simple perturbation method is then introduced to generate bootstrap replicates of the estimating functions and the parameter estimates. This provides a convenient way for combining the corresponding two types of estimating function for more efficient estimation.
Key Words: Bootstrap; Covariance model; Dependent data; Estimating function; Longitudinal data; Rank estimation; Repeated measures; Wilcoxon method.
Received December 2004. Revised November 2005.