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This article is part of the supplement: Genetic Analysis Workshop 13: Analysis of Longitudinal Family Data for Complex Diseases and Related Risk Factors

Open Access Proceedings

Comparison of longitudinal variance components and regression-based approaches for linkage detection on chromosome 17 for systolic blood pressure

Mariza de Andrade* and Curtis Olswold

Author Affiliations

Division of Biostatistics, Department of Health Sciences Research, Mayo Clinic, 200 First Street, SW, Rochester, Minnesota, USA

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BMC Genetics 2003, 4(Suppl 1):S17  doi:10.1186/1471-2156-4-S1-S17

Published: 31 December 2003


We compare two methods to detect genetic linkage by using serial observations of systolic blood pressure in pedigree data from the Framingham Heart Study focusing on chromosome 17. The first method is a variance components (VC) approach that incorporates longitudinal pedigree data, and the second method is a regression-based approach that summarizes all longitudinal measures in one single measure. No evidence of linkage was found either using the VC longitudinal approach or the regression-based approach, except when all time points were used from Cohorts 1 and 2 and only subjects aged 25 and 75 years were included.