: When a gene affects multiple traits independently, potentially biasing the causal estimate.

: Used to study the causal impact of alcohol, smoking, blood pressure, and cholesterol on various chronic diseases . ⚠️ Challenges to Validity

: A specialized scale used to identify barriers to colorectal cancer screening specifically in men.

: Uses summary statistics from two separate groups (e.g., one group for LDL levels and another for heart disease data), which is often more cost-effective.

: There are no common causes (confounders) shared between the genetic variants and the outcome.

: Differences in ancestry within a study can create false associations. 🛠️ Related Tools & Models

: Typically single nucleotide polymorphisms (SNPs) identified through Genome-Wide Association Studies (GWAS) . Data Types :

: Occurs if the chosen genetic variant is only weakly linked to the exposure, leading to inaccurate results.