Relations among homogeneity,collapsibility and nonconfounding in distribution effects |
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| Authors: | Xue-li Wang Li Gao |
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| Institution: | [1]School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]Department of Mathematics, Binzhou University, Shandong 256600, China |
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| Abstract: | In this paper, the concept of distribution effect is proposed without the causal diagram. Following the notation of Stone
11], we assume that the exposure treatment X is an unknown deterministic function of the confounder set Pa(X) and a random error ?. We discuss sufficient and necessary conditions for homogeneity, collapsibility and nonconfounding for distribution effects
and discuss relations among them. |
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| Keywords: | Collapsibility confounding homogeneity distribution effect |
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