Abstract
Trend test in dose-response has been a central problem in medicine. This paper treats the problem of comparing umbrella pattern treatment effects. Under an ordered m × r × k table, this article considers testing the hypothesis that all multinomial populations are conditional independence against the alternative that they are in an umbrella trend. For this hypothesis test problem, this article introduces a model-free test method by using likelihood ratio test statistic and gives the asymptotic distribution of the test statistic. Simulation study is conducted to compare the empirical power performed via the proposed method and others. Finally, two real data are studied to illustrate the validity of the proposed method.
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This research is supported by the National Natural Science Foundation of China under Grant No. 10771163.
This paper was recommended for publication by Editor Guohua ZOU.
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Feng, Y., Wang, J. & Zuo, G. A nonparametric test against an umbrella alternative for stratified data. J Syst Sci Complex 24, 738–752 (2011). https://doi.org/10.1007/s11424-011-8216-z
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DOI: https://doi.org/10.1007/s11424-011-8216-z