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Indigenous Better Cardiac Care measure: 6.1-Rates of hospitalisation for cardiac conditions, 2016

Identifying and definitional attributes

Metadata item type:Help on this termIndicator
Indicator type:Help on this termIndicator
Short name:Help on this term6.1-Hospitalisations for cardiac conditions
METeOR identifier:Help on this term657092
Registration status:Help on this termHealth, Standard 17/08/2017
Description:Help on this term

Rates of hospitalisation for cardiac conditions, by Aboriginal and Torres Strait Islander status.

Rationale:Help on this term

In addition to the 5 priority areas, the Better Cardiac Care project also includes 2 summary measures, which are designed to monitor hospitalisations from cardiac conditions (measure 6.1—that is, this measure) and mortality from cardiac conditions (measure 6.2).

These measures, which provide a population-wide perspective on the impact of cardiac conditions over time, are broad indicators of the effectiveness of early risk assessment and preventative care.

Indicator set:Help on this termBetter Cardiac Care measures for Aboriginal and Torres Strait Islander people (2016) Health, Standard 17/08/2017

Collection and usage attributes

Computation description:Help on this term

The number of hospitalisations for cardiac conditions, divided by the estimated population, and multiplied by 1,000.

Age-standardised rates are calculated for comparisons between Indigenous and non-Indigenous Australians, and for analysis of change over time.

Presentation:

Hospitalisations per 1,000 population.

Definitions:

Hospitalisation (separation)an episode of care for an admitted patient that can be a total hospital stay (from admission to discharge, transfer or death) or a portion of a hospital stay beginning or ending in a change of care type (for example, from acute care to palliative care).

Cardiac conditionseparations with a principal diagnosis of ICD–10–AM (8th edn.) codes I00–I52, which includes acute rheumatic fever (ARF), chronic rheumatic heart diseases (RHDs), hypertensive diseases, ischaemic heart diseases, pulmonary heart disease and diseases of pulmonary circulation, and other forms of heart disease.

Computation:Help on this term

(Numerator ÷ Denominator) x 1,000

Age-standardised rate: calculated using the direct method, and the Australian standard population as at 30 June 2001.

Numerator:Help on this term

Number of admitted patient separations in the reference period with a principal diagnosis of a cardiac condition, excluding separations with a care type of Newborn that did not include qualified days.

Numerator data elements:Help on this term
Data Element / Data SetEpisode of care—principal diagnosis, code (ICD-10-AM 8th edn) ANN{.N[N]}
Data Source
National Hospital Morbidity Database (NHMD)
NMDS / DSS
Admitted patient care NMDS 2013-14
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetHospital service—care type, code N[N]
Data Source
National Hospital Morbidity Database (NHMD)
NMDS / DSS
Admitted patient care NMDS 2013-14
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetEpisode of admitted patient care (newborn)—number of qualified days, total N[NNNN]
Data Source
National Hospital Morbidity Database (NHMD)
NMDS / DSS
Admitted patient care NMDS 2013-14
Guide for use

Data source type: Administrative by-product data


Denominator:Help on this term

Estimated population at the middle of the reference period. Where numerator data pertain to a single financial year, the denominator is the estimated population at 31 December, calculated from the average of the populations at 30 June at the beginning and end of the financial year. Where numerator data are summed across multiple years, the denominator is calculated by summing the mid-point population data for the relevant years.

Denominator data elements:Help on this term
Data Element / Data SetData Element

Person—estimated and projected Indigenous resident population


Data Source
ABS Indigenous estimates and projections (2011 Census-based)
Guide for use

Data source type: Census-based plus administrative by-product data


Data Element / Data SetData Element

Person—estimated resident population of Australia


Data Source
ABS Estimated resident population (2011 Census-based)
Disaggregation:Help on this term

Current period (2011–14), national data, by:

  • Indigenous status
  • Indigenous status, sex and age group (0–34, 35–44, 45–54, 55–64,  65+)
  • Indigenous status and remoteness area
  • Indigenous status and state/territory.

Time series (2004–05 to 2013–14), New South Wales, Victoria, Queensland, Western Australia, South Australia and the Northern Territory combined by:

  • Indigenous status.
Disaggregation data elements:Help on this term
Data Element / Data SetPerson—area of usual residence, statistical area level 2 (SA2) code (ASGS 2011) N(9)
Data Source
National Hospital Morbidity Database (NHMD)
NMDS / DSS
Admitted patient care NMDS 2014-15
Guide for use

Used for disaggregation by remoteness area and state/territory.

Data source type: Administrative by-product data


Data Element / Data SetPerson—date of birth, DDMMYYYY
Data Source
National Hospital Morbidity Database (NHMD)
NMDS / DSS
Admitted patient care NMDS 2013-14
Guide for use

Used together with date of admission for calculation of age.

Data source type: Administrative by-product data


Data Element / Data SetEpisode of admitted patient care—admission date, DDMMYYYY
Data Source
National Hospital Morbidity Database (NHMD)
NMDS / DSS
Admitted patient care NMDS 2013-14
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetPerson—Indigenous status, code N
Data Source
National Hospital Morbidity Database (NHMD)
NMDS / DSS
Admitted patient care NMDS 2013-14
Guide for use

Data source type: Administrative by-product data


Comments:Help on this term

General:

The data for this measure are drawn from the Australian Institute of Health and Welfare (AIHW) NHMD. For 2016 reporting, the most recent data available are for 2013–14. With the exception of time trends, data are reported for the 3-year period 2011–14 to enable for disaggregation of the data by the variables of interest. Single year data are reported for the time trend analysis.

Data reported for this measure are a count of hospitalisations for cardiac conditions. It is not a count of individuals because some of the hospitalisations would represent transfers for ongoing care or hospitalisations of 1 individual at different times of the year. It is also not a count of cardiac events such as ST-segment-elevation myocardial infarctions (STEMIs) because the diagnosis codes used were for the full range of cardiac conditions, rather than just those for events such as STEMIs. This differs from the approach used for Priority 3 measures (measures 3.1, 3.3 and 3.5) in which data relate to hospitalised events, which were estimated by only using diagnosis codes for specific cardiac events and by excluding hospitalisations ending in transfer to another acute hospital.

Indigenous identification:

While there is some under-identification of Indigenous Australians in the NHMD, data for all states and territories are considered to have adequate Indigenous identification from 2010–11 onwards (AIHW 2013).

Time series comparisons are based on data for the 6 jurisdictions that were assessed by the AIHW as having adequate identification of Indigenous hospitalisations from 2004–05 onwards—namely, New South Wales, Victoria, Queensland, Western Australia, South Australia and public hospitals in the Northern Territory (AIHW 2010). These 6 jurisdictions represent about 95% of the Australian Indigenous population (AIHW 2015b).

Representational attributes

Representation class:Help on this termRate
Data type:Help on this termReal
Unit of measure:Help on this termEpisode
Format:Help on this term

NN.N

Data source attributes

Data sources:Help on this term
Data SourceNational Hospital Morbidity Database (NHMD)
Frequency
Annual
Quality statement
Data quality statement: National Hospital Morbidity Database 2013–14
Data custodian

Australian Institute of Health and Welfare



Data SourceABS Indigenous estimates and projections (2011 Census-based)
Frequency
Periodic
Data custodian
Australian Bureau of Statistics

Data SourceABS Estimated resident population (2011 Census-based)
Frequency
Quarterly
Data custodian
Australian Bureau of Statistics

Accountability attributes

Reporting requirements:Help on this term

Annual reporting by the Australian Institute of Health and Welfare (AIHW 2015a, 2016).

Organisation responsible for providing data:Help on this term

Australian Institute of Health and Welfare

Release date:Help on this term24/11/2016

Source and reference attributes

Submitting organisation:Help on this term

Australian Institute of Health and Welfare

Origin:Help on this term

AIHW 2016. Better Cardiac Care measures for Aboriginal and Torres Strait Islander people: second national report 2016. Cat. no. IHW 169. Canberra: AIHW.

Reference documents:Help on this term

ACCD (Australian Consortium for Classification Development) 2013. The International Statistical Classification of Diseases and Related Health Problems, Tenth Revision, Australian modification (ICD-10-AM). 10th edn. Adelaide: Independent Hospital Pricing Authority, Lane Publishing.

AIHW (Australian Institute of Health and Welfare) 2010. Indigenous identification in hospital separations data: quality report. Health services series no. 35. Cat. no. HSE 85. Canberra: AIHW.

AIHW 2013. Indigenous identification in hospital separations data: quality report. Cat. no. IHW 90. Canberra: AIHW.

AIHW 2015a. Better Cardiac Care measures for Aboriginal and Torres Strait Islander people: first national report 2015. Cat. no. IHW 156. Canberra: AIHW.

AIHW 2015b. The health and welfare of Australia’s Aboriginal and Torres Strait Islander peoples 2015. Cat. no. IHW 147. Canberra: AIHW.

AIHW 2016. Better Cardiac Care measures for Aboriginal and Torres Strait Islander people: second national report 2016. Cat. no. IHW 169. Canberra: AIHW.

Relational attributes

Related metadata references:Help on this term

See also Indigenous Better Cardiac Care measure: 6.2-Mortality due to cardiac conditions, 2016 Health, Standard 17/08/2017

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