【摘 要】
：
In this paper,we consider the estimation of the regression parameter β defined by an estimating equation E{G[Y,S,X,β]} =0in a surrogate outcome setup,in w
【机 构】
：
Academy of Mathematics and Systems, Chinese Academy of Science
论文部分内容阅读
In this paper,we consider the estimation of the regression parameter β defined by an estimating equation E{G[Y,S,X,β]} =0in a surrogate outcome setup,in which the response variable Y is only partly observed while its easilymeasured surrogate S and the covariate X associated with Y are observed for all individuals.The estimation of β involves both the propensity function of Y given surrogate S and covariate X and the "working outcome regression model" φ(s,x; γ,) for E(Y | s,x).Our procedure yields consistent estimation of β as long as either the propensity score is correctly specified or φ(s,x; y) is correctly specified.More importantly,if the propensity function is correctly specified,the proposed estimator has the smallest trace of the asymptotic covariance matrix among all γ given in the "working outcome regression models" φ(s,x; γ)whether φ is correct or not,and the result is particularly meaningful when φ is misspecified.Simulations are conducted to examine the finite sample performance of the proposed procedure.A real data is analyzed for illustration.
其他文献
Quality of statistical data in the statistical work is the "lifeline" in the background,this article on Bureau of Qingyang District,field research,the ISO q
Directed acyclic graphs (DAGs) and completed partial directed acyclic graphs (CPDAG) are widely used to represent causal systems or uncertain probability sy
In this paper,we study an influence of malaria in China.Malaria is epidemic in the tropical and the temperate zones,and moreover Plasmodium falciparum has h
Influence analysis is an important process of statistical diagnostics.Existing methods of influence analysis in linear mixed models mostly focus on the fixe
in order to finish the task,essential model and a series of the Technology model Solution is often necessary to established to complex systems analysis,let
麻醉学知识繁多且晦涩难懂,在传统教学模式下住院医师往往无法建立良好的临床思维.思维导图作为一种展示思维过程的教学工具,将其与团队为基础的教学模式(TBL)、问题为导向的
East Asia has been developed as a rival of the European Union (EU) and North America in the economic aspect,but the environmental problem in this area has a
We obtain expressions for the elements of the Fisher information matrix (FIM) for the three parameters of the Downtons bivariate exponential (DBVE) distribu
This paper introduces the Generalized Instrumental Variable Function for linear SEMs,which can be used to check graphical conditions among variables such as
2010年国内外铝价表现 2010年中国原铝市场现状分析 2011年原铝市场展望。