Validity of self-reported body mass index among middle-aged participants in the Norwegian Women and Cancer study

Body mass index (BMI) based on self-reported height and weight has been criticized as being biased because of an observed tendency for overweight and obese people to overestimate height and underestimate weight, resulting in higher misclassification for these groups. We examined the validity of BMI...

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Bibliographic Details
Published in:Clinical epidemiology 2015-01, Vol.7 (default), p.313-323
Main Authors: Skeie, Guri, Mode, Nicolle, Henningsen, Maria, Borch, Kristin Benjaminsen
Format: Article
Language:English
Subjects:
Accuracy
Analysis
Body mass index
Cancer
Clinical medicine
Data collection
Education
Epidemiology
Health sciences: 800
Helsefag: 800
Marital status
Medical disciplines: 700
Medisinske Fag: 700
Middle age
Mortality
Norway
Obesity
Oncology, Experimental
Original Research
Population
Public health
Questionnaires
repeated measurements
Self report
Sociodemographics
Studies
Sunburn & sun tanning
Systematic review
Validity
VDP
women
Womens health
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Summary:Body mass index (BMI) based on self-reported height and weight has been criticized as being biased because of an observed tendency for overweight and obese people to overestimate height and underestimate weight, resulting in higher misclassification for these groups. We examined the validity of BMI based on self-reported values in a sample of Norwegian women aged 44-64 years. The study sample of 1,837 participants in the Norwegian Women and Cancer study self-reported height and weight, and then, within 1 year, either self-reported anthropometric again, or were measured by medical staff. Demographic and anthropometric were compared using t-tests and chi-square tests of independence. Misclassification of BMI categories was assessed by weighted Cohen's kappa and Bland-Altman plot. On average, the two measurements were taken 8 months apart, and self-reported weight increased by 0.6 kg (P
ISSN:1179-1349
1179-1349
DOI:10.2147/clep.s83839