Body size measurements as predictors of type 2 diabetes in Aboriginal people.
OBJECTIVE
To investigate waist circumference, waist-to-hip ratio, body mass index (BMI), weight and hip circumference as risk factors for type 2 diabetes in Aboriginal Australians.


METHODS
Community-based cross-sectional study.


METHODS
In total, 915 Australian Aboriginal adults (age: 18-74 y) from a remote Aboriginal community in the Northern Territory of Australia.


METHODS
Body size measurements included waist circumference, waist-to-hip ratio, BMI, weight and hip circumference. Diabetes status was determined according to medical history and fasting and 2-h postload plasma glucose values. Logistic regression was used to calculate odds ratio for diabetes associated with 1 standard deviation (s.d.) increase in a body size measurement. The areas under the ROC curves of five body size measurements were calculated and compared.


RESULTS
Risk of diabetes increased with increasing levels of body size. ORs (95% CI) for diabetes with adjustment for age and sex were 2.16 (1.75, 2.66), 1.80 (1.49, 2.17), 1.41 (1.17, 1.71), 1.81 (1.51, 2.19) and 1.84 (1.50, 2.24) associated with 1 s.d. increase in waist circumference, BMI, weight, waist-to-hip ratio, and hip circumference, respectively. The area under the ROC curve for waist circumference was significantly higher than those for other measurements.


CONCLUSIONS
Waist circumference is the best body size measurement in predicting diabetes in Aboriginal people.
Wang
Z
Z
Department of Medicine, The University of Queensland, Queensland, Australia. zwang@ccs.uq.edu.au
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W E
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D000293:Adolescent; D000328:Adult; D000368:Aged; D000886:Anthropometry; D049628:Body Size / Q000208:ethnology*; D003430:Cross-Sectional Studies; D003924:Diabetes Mellitus, Type 2 / Q000208:ethnology* / Q000209:etiology / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015876:Northern Territory / Q000453:epidemiology; D009765:Obesity / Q000150:complications / Q000208:ethnology* / Q000473:pathology; D015995:Prevalence; D012372:ROC Curve; D049629:Waist-Hip Ratio