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Agreement between self-reported and measured height, weight and body mass index in old age: a longitudinal study with 20 years of follow-up
Jönköping University, School of Health and Welfare, HHJ. Ageing - living conditions and health. Jönköping University, School of Health and Welfare, HHJ, Institute of Gerontology.
Jönköping University, School of Health and Welfare, HHJ. Ageing - living conditions and health. Jönköping University, School of Health and Welfare, HHJ, Dep. of Natural Science and Biomedicine.ORCID iD: 0000-0001-9042-4832
2010 (English)In: Age and Ageing, ISSN 0002-0729, E-ISSN 1468-2834, Vol. 39, no 4, p. 445-451Article in journal (Refereed) Published
Abstract [en]

Background: self-reported body mass index (BMI) based on self-reported height and weight is a widely used measure of adiposity in epidemiological research. Knowledge about the accuracy of these measures in late life is scarce.

Objective: the study aimed to evaluate the accuracy and changes in accuracy of self-reported height, weight and BMI calculated from self-reported height and weight in late life.

Design: a longitudinal population-based study with five times of follow-up was conducted.

Participants: seven hundred seventy-four community-living men and women, aged 40–88 at baseline (mean age 63.9), included in The Swedish Adoption/Twin Study of Aging.

Methods: participants self-reported their height and weight in a questionnaire, and height and weight were measured by experienced research nurses at an in-person testing five times during a 20-year period. BMI was calculated as weight (kilogramme)/height (metre)2.

Results: latent growth curve modelling showed an increase in the mean difference between self-reported and measured values over time for height (0.038 cm/year) and BMI (0.016 kg/m2/year), but not for weight.

Conclusions: there is a very small increase in the mean difference between self-reported and measured BMI with ageing, which probably would not affect the results when self-reported BMI is used as a continuous variable in longitudinal studies.

Place, publisher, year, edition, pages
Oxford University Press, 2010. Vol. 39, no 4, p. 445-451
Keywords [en]
body mass index, height, weight, reliability, elderly
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Other Social Sciences not elsewhere specified
Identifiers
URN: urn:nbn:se:hj:diva-12087DOI: 10.1093/ageing/afq038ISI: 000278968300008PubMedID: 20453247Scopus ID: 2-s2.0-77954267764OAI: oai:DiVA.org:hj-12087DiVA, id: diva2:318638
Projects
Swedish Adoption/Twin Study of AgingAvailable from: 2010-05-10 Created: 2010-05-10 Last updated: 2019-04-09Bibliographically approved

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Dahl, AnnaFransson, Eleonor

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