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Body mass index, waist hip ratio, and waist circumference: which measure to classify obesity?
Tiffany Gill1, Catherine Chittleborough, Anne Taylor
1Centre for Population Studies in Epidemiology, Department of Human Services, Adelaide. tiffany.gill@dhs.sa.gov.au
Objectives:
To determine the proportion of a representative population sample of adults in South Australia who have a body mass index (a measure of overall obesity) classified as normal or underweight, but who also have a waist circumference or waist hip ration (measures of central obesity) that indicates obesity.
Methods:
A representative population sample of adults aged 18 years and over living in the north west region of Adelaide (n = 2523) were recruited to the study. Clinical measures of height, weight, waist and hip circumference were obtained and used to determine body mass index, waist hip ratio and waist circumference.
Results:
Among women with a normal body mass index, 19.0% had a high waist circumference (> or = 80 cm) and 8.5% had a high waist hip ratio (> 0.85). Among males with a normal body mass index, 3.4% had a high waist circumference (> or = 95 cm) and 0.1% had a high waist hip ratio (> 1.0).
Conclusions:
Body mass index, waist hip ratio and waist circumference all have a role in the identification of those who are obese or overweight.
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