Heritability of Cardiovascular Risk Factors in Different Age Groups
Author Information
Author(s): W Mark Brown, Stephanie R Beck, Ethan M Lange, Cralen C Davis, Christine M Kay, Carl D Langefeld, Stephen S Rich
Primary Institution: Wake Forest University School of Medicine
Hypothesis
How does the heritability of cardiovascular disease risk factors vary across different age groups?
Conclusion
The study found that some common traits, like height, have consistent genetic contributions over time, while others, like systolic blood pressure, show more variability.
Supporting Evidence
- The highest heritability estimate for height was 0.88 across all age groups.
- BMI showed a heritability estimate of 0.64 in the 40-year age group.
- Systolic blood pressure had a heritability estimate of 0.39 in the 40-year age group.
Takeaway
This study looked at how genetics affect things like height and blood pressure as people get older. It found that some traits stay pretty much the same in terms of genetics, while others change a lot.
Methodology
The study used data from the Framingham Heart Study, analyzing heritability estimates for height, weight, BMI, and systolic blood pressure across three age groups.
Limitations
The study's sample size and complexity may have reduced the power to detect lower heritability estimates.
Participant Demographics
Participants included 4692 subjects from 330 pedigrees, with a mean age of 42.5 years in the youngest group and 68.2 years in the oldest group, with 55.6% female.
Statistical Information
P-Value
<0.0000025
Statistical Significance
p<0.0000025
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website