MEANING
Systematic distortion arising when inclusion in a sample or analysis is related to exposure, outcome, or both.
Use it for
Name bias created by non-neutral inclusion in the analyzed sample.Describe distortion introduced when who is observed depends on relevant variables.
Words that belong together
- selection bias in a cohort
- risk of selection bias
- adjust for selection bias
On the page
Only surviving patients responded, so selection bias may have changed the estimated treatment effect.
Nearby words
Word forms
- Base
- selection bias
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Usage notes
Selection bias depends on the target estimate and selection mechanism; a nonrandom sample is not automatically biased for every question.
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