Illustrating bias due to conditioning on a collider
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ID: 305269
2009
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Abstract
That conditioning on a common effect of exposure and outcome may cause selection, or collider-stratification, bias is not intuitive. We provide two hypothetical examples to convey concepts underlying bias due to conditioning on a collider. In the first example, fever is a common effect of influenza and consumption of a tainted egg-salad sandwich. In the second example, case-status is a common effect of a genotype and an environmental factor. In both examples, conditioning on the common effect imparts an association between two otherwise independent variables; we call this selection bias.
| Reference Key |
openalex_W2127992265
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|---|---|
| Authors | Stephen R. Cole, Robert W. Platt, Enrique F. Schisterman, Haitao Chu, Daniel Westreich, David J. Richardson, Charles Poole |
| Journal | International Journal of Epidemiology |
| Year | 2009 |
| DOI |
10.1093/ije/dyp334
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| URL | |
| Keywords | Keywords not found |
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