Please use this identifier to cite or link to this item:http://hdl.handle.net/20.500.12105/16171
Selection bias due to conditioning on a collider
BMJ. 2023 Jun 7;381:1135.
Effect estimates may be biased when the study design or the data analysis is conditional on a collider—a variable that is caused by two other variables. Causal directed acyclic graphs are a helpful tool to identify colliders that may introduce selection bias in observational research.
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