A signed-rank test for clustered data.

  title={A signed-rank test for clustered data.},
  author={Somnath Datta and Glen A. Satten},
  volume={64 2},
We consider the problem of comparing two outcome measures when the pairs are clustered. Using the general principle of within-cluster resampling, we obtain a novel signed-rank test for clustered paired data. We show by a simple informative cluster size simulation model that only our test maintains the correct size under a null hypothesis of marginal symmetry compared to four other existing signed rank tests; further, our test has adequate power when cluster size is noninformative. In general… CONTINUE READING
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