Mathematics – Statistics Theory
Scientific paper
2009-03-04
Annals of Statistics 2009, Vol. 37, No. 1, 459-489
Mathematics
Statistics Theory
Published in at http://dx.doi.org/10.1214/07-AOS572 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of
Scientific paper
10.1214/07-AOS572
Association models for a pair of random elements $X$ and $Y$ (e.g., vectors) are considered which specify the odds ratio function up to an unknown parameter $\bolds\theta$. These models are shown to be semiparametric in the sense that they do not restrict the marginal distributions of $X$ and $Y$. Inference for the odds ratio parameter $\bolds\theta$ may be obtained from sampling either $Y$ conditionally on $X$ or vice versa. Generalizing results from Prentice and Pyke, Weinberg and Wacholder and Scott and Wild, we show that asymptotic inference for $\bolds\theta$ under sampling conditional on $Y$ is the same as if sampling had been conditional on $X$. Common regression models, for example, generalized linear models with canonical link or multivariate linear, respectively, logistic models, are association models where the regression parameter $\bolds\beta$ is closely related to the odds ratio parameter $\bolds\theta$. Hence inference for $\bolds\beta$ may be drawn from samples conditional on $Y$ using an association model.
Osius Gerhard
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