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Definition

Prevalence of obesity in adults and children.

Indicator Summary

Numerator
For adults: Number of persons aged 18 years or over with a BMI greater than or equal to 30
For children: Number of children aged 5–17 years exceeding weight/height/age obesity norms
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Denominator
For adults: Population aged 18 years or over
For children: Population aged 5–17 years
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Computation
Rates are directly age-standardised to the Australian population as at 30 June 2001.

Excludes pregnant women and people with an unknown Body Mass Index (BMI).

Scope of collections limited to persons usually resident in private dwellings. Persons usually resident in non-private dwellings such as hotels, motels, hospitals, nursing homes and short-stay caravan parks were not included in the surveys.

Estimates …

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Disaggregation

Calculation rules

Computation Rule
Description
Rates are directly age-standardised to the Australian population as at 30 June 2001.

Excludes pregnant women and people with an unknown Body Mass Index (BMI).

Scope of collections limited to persons usually resident in private dwellings. Persons usually resident in non-private dwellings such as hotels, motels, hospitals, nursing homes and short-stay caravan parks were not included in the surveys.

Estimates for non-Indigenous people estimates exclude those living in very remote areas of Australia.

BMI is calculated as weight (in kilograms) divided by the square of height (in metres).

For adults, obesity is defined as a BMI of greater than or equal to 30.

For children, obesity is defined as BMI (appropriate for age and sex) that is likely to be 30 or more at age 18 years, based on centile curves.

BMI derived from measured height and weight is preferable to that derived from self-reported height and weight.
Numerators
For adults: Number of persons aged 18 years or over with a BMI greater than or equal to 30
For children: Number of children aged 5–17 years exceeding weight/height/age obesity norms
Denominators
For adults: Population aged 18 years or over
For children: Population aged 5–17 years
Disaggregation

References

Cole TJ, Bellizzi MC, Flegal KM, Dietz WH. 2000. Establishing a standard definition for child overweight and obesity worldwide: international survey. BMJ 2000; 320:1240–3;
Cole TJ, Flegal KM, Nicholls D, Jackson AA. 2007. Body mass index cut offs to define thinness in children and adolescents: international survey. BMJ 2007;335;194.
This content Based on Australian Institute of Health and Welfare material. Attribution provided as required under the AIHW CC-BY licence.

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