Should instrumental variables be used as matching variables?

Should adjustment for auxiliary variables be used in prevalence estimations?

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Genetic markers as instrumental variables

The use of genetic markers as instrumental variables (IV) is receiving increasing attention from economists, statisticians, epidemiologists and social scientists. Although IV is commonly used in economics, the appropriate conditions for the use of genetic variants as instruments have not been well defined. The increasing availability of biomedical data, however, makes understanding of these con...

Ecological Inferencewith Instrumental Variables

This note observes that instrumental variables techniques are useful not only for estimating causal effects, but that they simultaneously solve the ecological inference problem. ∗Correspondence can be addressed to the author at MEDS Department, Kellogg School of Management, 2001 Sheridan Rd, Evanston, IL 60208, or by email: [email protected]. The ecological inference problem i...

Generalized Instrumental Variables

This paper concerns the assessment of direct causal effects from a combination of: (i) non­ experimental data, and (ii) qualitative do­ main knowledge. Domain knowledge is en­ coded in the form of a directed acyclic graph (DAG), in which all interactions are assumed linear, and some variables are presumed to be unobserved. We provide a generalization of the well-known method of Instrumental Var...

Mediating Instrumental Variables