title: Strengths and weaknesses of family studies of high blood pressure.
abstract: Just because a study gives a clear answer does not mean that it asked a clear question. In asking why high blood pressure runs in some families but not in others, there is a need for clear study design, with careful definitions and selection of positive and negative family histories and a rigorous search for bias and confounding factors.
authors.affiliation: Department of Public Health, University of Glasgow, UK.
authors.forename: G C
authors.initials: GC
authors.lastname: Watt
mesh_terms: D004198:Disease Susceptibility; D005069:Evaluation Studies as Topic; D005192:Family Health; D005838:Genotype; D006801:Humans; D006973:Hypertension / Q000235:genetics* / Q000503:physiopathology / Q000517:prevention & control; D012494:Sampling Studies