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Effect of home blood pressure and gender on estimates of the familial aggregation of blood pressure: The Tecumseh Blood Pressure Study

Academic Article
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Overview

authors

  • Jamerson, K. A.
  • Schork, Nicholas
  • Julius, S.

publication date

  • September 1992

journal

  • Hypertension  Journal

abstract

  • Blood pressure (BP) readings from a single clinic visit are often used in population studies investigating the genetic basis of BP. We examined first-degree relatives in the Tecumseh Blood Pressure study to compare heritability estimates of BP readings obtained in the clinic-office setting (the average of two seated readings) with self-reported home BP readings (the average of 14 readings) taken over a 1-week period. The hypothesis tested was that repeated BP readings obtained in the home over the 1-week period would have fewer artifacts (i.e., environmentally induced variability in BP) and thus would better estimate the true "basal" BP that, in turn, would improve heritability estimates. We and others assume that the true basal BP level is heritable. We therefore expected that this "true" BP, by reducing BP variability of offspring, would show a stronger between-sibling correlation and that it would correlate better to parental BP as measured in a clinic setting. Correlation coefficients were calculated between siblings in the present Tecumseh study using self-reported home BP and clinic BP readings. Among 380 siblings (average age, 31.4 years), correlation coefficients for the home readings were of the same magnitude as for office readings (home, r = 0.23, p less than 0.01; office, r = 0.24, p less than 0.01). When offspring clinic BP readings were compared with archived BP data on parents, the correlation between offspring clinic and parental clinic BP readings was stronger (r = 0.24, p less than 0.05) than the correlation of offspring home BP readings to parental clinic BP readings (r = 0.17, p less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

subject areas

  • Adult
  • Blood Pressure
  • Blood Pressure Determination
  • Family Health
  • Female
  • Home Care Services
  • Humans
  • Male
  • Office Visits
  • Parents
  • Sex Characteristics
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Research

keywords

  • BLOOD PRESSURE
  • GENDER
  • GENETICS
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Identity

International Standard Serial Number (ISSN)

  • 0194-911X

PubMed ID

  • 1516950
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Additional Document Info

start page

  • 314

end page

  • 318

volume

  • 20

issue

  • 3

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