On recovering a population covariance matrix in the presence of selection bias

Manabu Kuroki and Zhihong Cai

Biometrika, 2006, vol. 93, issue 3, 601-611

Abstract: This paper considers the problem of using observational data in the presence of selection bias to identify causal effects in the framework of linear structural equation models. We propose a criterion for testing whether or not observed statistical dependencies among variables are generated by conditioning on a common response variable. When the answer is affirmative, we further provide formulations for recovering the covariance matrix of the whole population from that of the selected population. The results of this paper provide guidance for reliable causal inference, based on the recovered covariance matrix obtained from the statistical information with selection bias. Copyright 2006, Oxford University Press.

Date: 2006
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