Accuracy of body mass index measurements in community-dwelling older Japanese people based on self-reported anthropometric data
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The aim was to assess the accuracy of body mass index (BMI) measurements in Japanese older people based on self-reported anthropometric data.
The study participants were 420 older people aged 65 years or older who were living independently in their communities. The participants’ BMIs were calculated based on height and weight values obtained from self-reported questionnaires and actual measurements. The concordance between self-reported and measured BMI values was then analyzed using intraclass correlation coefficients (ICCs) and 95% limits of agreement (95% LOA) stratified by sex.
The ICCs were 0.964 in men and 0.970 in women; however, the 95% LOA were relatively broad, ranging from − 1.07 to 1.39 kg/m2 in men and from − 1.52 to 1.46 kg/m2 in women.
These findings suggest that BMI assessments in Japanese older people should be based on measured as opposed to self-reported values when investigating changes in BMI over time.
KeywordsAged Anthropometric Body mass index Japanese Reliability
This study was funded by JSPS KAKENHI (Grant number 16K21348). The funder played no role in the design, methods, recruitment, data collection, analysis, or preparation of the paper.
Compliance with ethical standards
Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
All procedures that involved human participants in this study were performed in accordance with the ethical standards of the Institutional Review Board of the School of Allied Health Sciences at Kitasato University (approval number 2016-G021B) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all participants.
- 9.R Core Team (2015) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna. https://www.R-project.org/. Accessed 4 Sep 2015