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Bias

Definition
AI-generated

Bias is a systematic deviation of an estimator's expected value from the true parameter.

Topics
Epidemiology
Related
Case-Control Study Collider Bias Horizontal Pleiotropy (MR)

Why it matters in GWAS

Unaddressed bias produces spurious loci, distorted effect sizes, and misleading downstream causal inference; design and analysis choices should target the relevant bias mechanisms.

Example usage

"We discussed collider bias from conditioning on survival to ICU admission when interpreting COVID-19 GWAS hits."

Case-Control Study Collider Bias Horizontal Pleiotropy (MR) Multiple Testing Correction Participation Bias Population Stratification Winner's curse Principal Component Analysis (PCA)
Related-term network

Click any node to open that term page.

Node order. The current term is first. Next come every page linked from Related terms, in the same top-to-bottom order as that list. Then new terms appear in two-hop layers: for each of those direct neighbors (in that same order), their related terms are appended if not already listed. A third pass does the same for two-hop nodes. The walk stops when a fixed maximum number of nodes is reached.

References

  • GWASTutorial: Bias.
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