Summarized by Masters of Longevity from Nature Aging.
Age-related genetic effect estimation methods are compared; this article previews a methods-focused analysis contrasting cross-sectional and longitudinal designs.
Key Takeaways
- Cross-sectional and longitudinal age-varying genetic effect estimates agreed in direction for 84.21% of 57 variants.
- Gene-by-birth-year cohort confounding explained 70.8% of variance in effect-size differences between designs.
- Participation bias accounted for an additional 11.6% of the discrepancies while nonlinear age trajectories contributed 4.2%.
