4.3 Article

Measurement error of waist circumference: gaps in knowledge

Journal

PUBLIC HEALTH NUTRITION
Volume 16, Issue 2, Pages 281-288

Publisher

CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1368980012002741

Keywords

Waist circumference; Measurement error

Funding

  1. Netherlands Organization for Health Research and Development (ZonMw) [120510007]

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Objective: It is not clear whether measuring waist circumference in clinical practice is problematic because the measurement error is unclear, as well as what constitutes a clinically relevant change. The present study aimed to summarize what is known from state-of-the-art research. Design: To identify the magnitude of the measurement error of waist circumference measurements from the literature, a search was conducted in PubMed from 1975 to February 2011. Results: The measurement error may vary between 0.7cm and 15cm. Taking a realistic range of measurable waist circumference into account (60-135 cm), we argue that a short-term clinically relevant change in waist circumference of 5% may lie between 3.0 and 6.8 cm and a maintained clinically relevant change of 3% between 1.8 and 4.1cm. Conclusions: Based on these results, we conclude it may be difficult to distinguish clinically relevant change from measurement error in individual subjects, due to the large measurement error and unclear definition of clinically relevant change. More research is needed to address these gaps in knowledge. To minimize measurement error, we recommend using a uniform measurement protocol, training and repeated measurements.

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