A structural approach to selection bias.

Volume: 15, Issue: 5, Pages: 615 - 625
Published: Sep 1, 2004
Abstract
The term null null encompasses various biases in epidemiology. We describe examples of selection bias in case-control studies (eg, inappropriate selection of controls) and cohort studies (eg, informative censoring). We argue that the causal structure underlying the bias in each example is essentially the same: conditioning on a common effect of 2 variables, one of which is either exposure or a cause of exposure and the other is either the...
Paper Details
Title
A structural approach to selection bias.
Published Date
Sep 1, 2004
Volume
15
Issue
5
Pages
615 - 625
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