Relations among homogeneity, collapsibility and nonconfounding in distribution effects  

作　　者：WANG Xue-li GAO Li 

机构地区：[1]School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]Department of Mathematics, Binzhou University, Shandong 256600, China

出　　处：《Applied Mathematics(A Journal of Chinese Universities)》2010年第3期291-296,共6页高校应用数学学报（英文版）（B辑）

基　　金：Supported by the NSFC (10801019)

摘　　要：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 ε. We discuss sufficient and necessary conditions for homogeneity, collapsibility and nonconfounding for distribution effects and discuss relations among them.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 ε. We discuss sufficient and necessary conditions for homogeneity, collapsibility and nonconfounding for distribution effects and discuss relations among them.

关 键 词：COLLAPSIBILITY CONFOUNDING HOMOGENEITY distribution effect. 

分 类 号：TU444[建筑科学—岩土工程] TN821.8[建筑科学—土工工程]