Personalised measures of obesity using waist to height ratios from an Australian health screening program

Herbert F Jelinek; Andrew Stranieri; Andrew Yatsko; Sitalakshmi Venkatraman

doi:10.1177/2055207619844362

Personalised measures of obesity using waist to height ratios from an Australian health screening program

Digit Health. 2019 Apr 12:5:2055207619844362. doi: 10.1177/2055207619844362. eCollection 2019 Jan-Dec.

Authors

Herbert F Jelinek¹, Andrew Stranieri², Andrew Yatsko², Sitalakshmi Venkatraman³

Affiliations

¹ Charles Sturt University, Australia.
² Federation University, Australia.
³ Melbourne Polytechnic, Australia.

Abstract

Objectives: The aim of the current study is to generate waist circumference to height ratio cut-off values for obesity categories from a model of the relationship between body mass index and waist circumference to height ratio. We compare the waist circumference to height ratio discovered in this way with cut-off values currently prevalent in practice that were originally derived using pragmatic criteria.

Method: Personalized data including age, gender, height, weight, waist circumference and presence of diabetes, hypertension and cardiovascular disease for 847 participants over eight years were assembled from participants attending a rural Australian health review clinic (DiabHealth). Obesity was classified based on the conventional body mass index measure (weight/height²) and compared to the waist circumference to height ratio. Correlations between the measures were evaluated on the screening data, and independently on data from the National Health and Nutrition Examination Survey that included age categories.

Results: This article recommends waist circumference to height ratio cut-off values based on an Australian rural sample and verified using the National Health and Nutrition Examination Survey database that facilitates the classification of obesity in clinical practice. Gender independent cut-off values are provided for waist circumference to height ratio that identify healthy (waist circumference to height ratio ≥0.45), overweight (0.53) and the three obese (0.60, 0.68, 0.75) categories verified on the National Health and Nutrition Examination Survey dataset. A strong linearity between the waist circumference to height ratio and the body mass index measure is demonstrated.

Conclusion: The recommended waist circumference to height ratio cut-off values provided a useful index for assessing stages of obesity and risk of chronic disease for improved healthcare in clinical practice.

Keywords: National Health and Nutrition Examination Survey; Obesity; body mass index; data mining; personalised healthcare; waist circumference to height ratio.