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Biometrika 1992 79(3):463-474; doi:10.1093/biomet/79.3.463
© 1992 by Biometrika Trust
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Treatment effect heterogeneity in paired data

A. C. DAVISON

Department of Statistics, University of Oxford Oxford OX1 3TG, U.K.

Data from matched pairs are often analysed under the assumption that treatment effects are homogeneous. We develop tests of this assumption, with Poisson and binomial examples. Mixture models for inference when overdispersion is present are investigated, with stress on matched pairs of counts.

Key Words: Binomial data • Conditional inference • Exponential family • Matched pairs • Mixture model • Overdispersion • Poisson data • Score statistic • Tensor methods


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