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Definition

The proportion of people who have Type 2 diabetes.

Numerator

Number of persons aged 18 years and over with known diabetes (Type 2) or newly diagnosed diabetes as determined by a fasting plasma glucose test.

For the supplementary measure: number of persons aged 25 years and over with known diabetes (Type 2) or newly diagnosed diabetes as determined by a fasting plasma glucose test.

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Denominator

Population aged 18 year and over.

For the supplementary measure: population aged 25 years and over.

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Computation
The National Health Measures Survey component of the 2011–13 Australian Health Survey included a fasting plasma glucose test.

A respondent to the survey is considered to have known diabetes if they had ever been told by a doctor or nurse that they have Type 2 diabetes and:

  • They were taking diabetes medication (either insulin or tablets); or
  • Their blood test …
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Disaggregation

2011–12—State and territory, by sex.

2011–12—Nationally, by:

  • remoteness (Australian Statistical Geography Standard (ASGS) Remoteness Structure).
  • 2011 Socio-Economic Indexes for Areas (SEIFA) Index of Relative Socio-economic Disadvantage (IRSD) quintiles.
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Calculation rules

Computation Rule
Description
The National Health Measures Survey component of the 2011–13 Australian Health Survey included a fasting plasma glucose test.

A respondent to the survey is considered to have known diabetes if they had ever been told by a doctor or nurse that they have Type 2 diabetes and:

  • They were taking diabetes medication (either insulin or tablets); or
  • Their blood test result for fasting plasma glucose was greater than or equal to 7.0 mmol/L.

A respondent to the survey is considered to have newly diagnosed diabetes if they reported no prior diagnosis of diabetes, but had a fasting plasma glucose value greater than or equal to 7.0 mmol/L.

Excludes persons who did not fast for 8 hours or more prior to their blood test.

Excludes women with gestational diabetes.

The data are reported for two age ranges:

  • People aged 18 years and over; and
  • People aged 25 years and over, as a supplementary measure.

Rates are directly age-standardised to the 2001 Australian population.

Analysis by remoteness and Socio-Economic Indexes for Areas (SEIFA) Index of Relative Socio-Economic Disadvantage (IRSD) is based on usual residence of person (based on data availability).

Presented as a percentage.

95% confidence intervals and relative standard errors calculated for rates.

Note: The type of diabetes for newly diagnosed cases cannot be determined from a fasting plasma glucose or HbA1c test alone. However, it is assumed that the vast majority of newly diagnosed cases would be Type 2.

Numerators

Number of persons aged 18 years and over with known diabetes (Type 2) or newly diagnosed diabetes as determined by a fasting plasma glucose test.

For the supplementary measure: number of persons aged 25 years and over with known diabetes (Type 2) or newly diagnosed diabetes as determined by a fasting plasma glucose test.

Denominators

Population aged 18 year and over.

For the supplementary measure: population aged 25 years and over.

Disaggregation

2011–12—State and territory, by sex.

2011–12—Nationally, by:

  • remoteness (Australian Statistical Geography Standard (ASGS) Remoteness Structure).
  • 2011 Socio-Economic Indexes for Areas (SEIFA) Index of Relative Socio-economic Disadvantage (IRSD) quintiles.

References