Table Table 1 From the research bench 6 September 2026

What does selection bias mean?

Object	Question	Example
Target population	To whom or what should the conclusion speak?	All eligible accounts in a defined market and period
Eligibility rule	Which units are allowed to enter the intended population?	Accounts meeting region, product, and date criteria
Observed sample	Which units were actually measured or analyzed?	Accounts with a response, event, or usable record
Conditioning event	What later state or variable restricted the comparison?	Reached proposal, answered survey, or accepted treatment

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What is selection bias? The sample can change the answer

Selection bias begins with the inclusion mechanism. Name the target, eligibility rule, exclusions, and conditioning event before comparing outcomes.

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Isoglu, S. (2026). What does selection bias mean? [Table]. isoglu.com. https://isoglu.com/insights/exhibits/isoglu-2026-what-is-selection-bias-fig01/

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@misc{isoglu-2026-what-is-selection-bias-fig01,
  author = {Isoglu, Sinan},
  title = {{What does selection bias mean?}},
  year = {2026},
  howpublished = {Table 1, isoglu.com},
  url = {https://isoglu.com/insights/exhibits/isoglu-2026-what-is-selection-bias-fig01/},
  note = {From the essay {What is selection bias? The sample can change the answer}}
}

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