A rank-sum test for clustered data when the number of subjects in a group within a cluster is informative.

@article{Dutta2016ART,
  title={A rank-sum test for clustered data when the number of subjects in a group within a cluster is informative.},
  author={Sandipan Dutta and Somnath Datta},
  journal={Biometrics},
  year={2016},
  volume={72 2},
  pages={432-40}
}
The Wilcoxon rank-sum test is a popular nonparametric test for comparing two independent populations (groups). In recent years, there have been renewed attempts in extending the Wilcoxon rank sum test for clustered data, one of which (Datta and Satten, 2005, Journal of the American Statistical Association 100, 908-915) addresses the issue of informative… CONTINUE READING