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Updated: Jul 8, 2026
09:36
Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Intraobserver and interobserver variability of measuring waist circumference
Judit Nádas1, Zsuzsanna Putz, Gabriella Kolev
13rd Medical Department, Bajcsy-Zsilinszky Hospital, Budapest, Hungary.
Summary
Waist circumference measurements show high reliability for assessing abdominal obesity. Despite higher variability than body mass index, absolute differences are small, supporting its clinical use.
Area of Science:
- Anthropometry
- Clinical measurement reliability
- Obesity assessment
Background:
- Waist circumference measurement is a widely accepted method for assessing abdominal obesity.
- Reliability of anthropometric measurements is crucial for accurate health assessments.
- Understanding measurement variability is key for consistent clinical practice.
Purpose of the Study:
- To evaluate the intraobserver and interobserver reliability of waist circumference measurements.
- To compare the reliability of waist circumference measurements with body mass index (BMI).
Main Methods:
- 150 adult patients had anthropometric parameters measured by two diabetes educators on two consecutive days.
- Intraobserver difference was assessed by comparing measurements from the same educator on different days.
- Interobserver difference was assessed by comparing measurements from two different educators on the same day.
Main Results:
- Correlation coefficients for all measurements exceeded 0.99, indicating high consistency.
- Interobserver differences for waist circumference were statistically significant (p<0.0001).
- While percentage differences for waist circumference were higher than BMI, absolute differences were small (e.g., absolute Delta for waist circumference: 1.51 cm and 2.15 cm).
Conclusions:
- Intraobserver and interobserver variability for waist circumference measurements were higher compared to body mass index.
- Absolute differences in repeated waist circumference measurements are small, suggesting good reliability.
- The reliability of waist circumference measurements should be considered in clinical practice for accurate abdominal obesity assessment.
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