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National Healthcare Agreement: PI 01-Proportion of babies born of low birth weight, 2014

Identifying and definitional attributes

Metadata item type:Help on this termIndicator
Indicator type:Help on this termProgress measure
Short name:Help on this termPI 01-Proportion of babies born of low birth weight, 2014
METeOR identifier:Help on this term517688
Registration status:Help on this termHealth, Superseded 14/01/2015
Description:Help on this termThe incidence of low birthweight among liveborn singleton babies of Aboriginal and Torres Strait Islander mothers and other mothers.
Indicator set:Help on this termNational Healthcare Agreement (2014) Health, Superseded 14/01/2015
Outcome area:Help on this termPrevention Health, Standard 07/07/2010
Quality statement:Help on this termNational Healthcare Agreement: PI 01-Proportion of babies born with low birth weight, 2014 QS Health, Superseded 14/01/2015

Collection and usage attributes

Computation description:Help on this term

Low birthweight is defined as less than 2,500 grams.

Excludes multiple births and stillbirths

Analysis by state/territory, remoteness and Socio-Economic Indexes for Areas (SEIFA) Index of Relative Socio-economic Disadvantage (IRSD) is based on usual residence of the mother.

Data excludes Australian non-residents, residents of external territories and records where state/territory of residence was not stated.

Variability bands are to be calculated for single-year and aggregate years data by state and territory using the method below.

Presented as a:

  • percentage, and 
  • number (for disaggregations by Indigenous status).
Computation:Help on this term

100 × (Numerator ÷ Denominator)

Variability bands: to be calculated using the standard method for estimating 95% confidence intervals as follows:

The 95% Confidence Interval Formula

Where   n=number of live-born singleton infants.

CI = confidence interval

CR = crude rate (expressed as a percentage)

Numerator:Help on this termNumber of low birthweight liveborn singleton infants.
Numerator data elements:Help on this term
Data Element / Data SetBirth—birth weight, total grams NNNN
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
Data Element / Data SetBirth event—birth plurality, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
Data Element / Data SetBirth—birth status, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
Denominator:Help on this termNumber of liveborn singleton infants.
Denominator data elements:Help on this term
Data Element / Data SetBirth—birth status, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
Data Element / Data SetBirth event—birth plurality, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
Data Element / Data SetBirth—birth weight, total grams NNNN
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
'Known birthweight' is defined as valid non-missing birthweight.
Disaggregation:Help on this term

2011—Nationally by:

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

2011—State and territory, by:

  • Indigenous status

2009–2011—State and territory, by:

  • Indigenous status

Disaggregation by Indigenous status is recommended to be reported using three-year combined data for the current reporting period due to the small number of low birth weight infants born to Indigenous mothers each year. Single year data (2011) will be reported for time-series (state/territory by Indigenous status).

Disaggregation data elements:Help on this term
Data Element / Data SetPerson—Indigenous status, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
Indigenous status of infants is based on the Indigenous status of the mother.
Data Element / Data SetPerson—area of usual residence, statistical area level 2 (SA2) code (ASGS 2011) N(9)
Data Source
AIHW National Perinatal Data Collection (NPDC)
NMDS / DSS
Perinatal NMDS 2010-2011
Guide for use
Data source type: Administrative by-product data
Used for disaggregation by state/territory, remoteness and SEIFA IRSD. Geographical unit used is Statistical Local Area. If data are coded according to ASGC boundaries in another year, concordance files are used to map between boundaries.
Comments:Help on this term

Most recent data available for 2014 Council of Australian Governments (COAG) Reform Council (CRC) report: 2011 (calendar year data).

Indigenous: Aggregated data (2009 to 2011) will be reported for the current reporting period (state and territory).

Single year data (2011) will be reported for time-series (state and territory).

Information is included in the National Perinatal Data Collection (NPDC) for all live births and still births of at least 400 grams birthweight or at least 20 weeks gestation. Indigenous status of infants is currently only available based on the Indigenous status of the mother.

For further detailed analysis by Indigenous status see the CRC National Indigenous Reform Agreement (NIRA) report.

For 2011 data, the 2011 SEIFA IRSD quintile and decile data will be produced using the Australian Standard Geographical Classification (ASGC) geographical unit of Statistical Local Area (SLA). In future years, these data will be produced using the Australian Statistical Geography Standard (ASGS) geographical unit of Statistical Area 2 (SA2).

Representational attributes

Representation class:Help on this termPercentage
Data type:Help on this termReal
Unit of measure:Help on this termPerson
Format:Help on this termN[NN.NN]

Indicator conceptual framework

Framework and dimensions:Help on this termCommunity and socioeconomic

Data source attributes

Data sources:Help on this term
Data SourceAIHW National Perinatal Data Collection (NPDC)
Frequency
Calendar years ending 31 December each year
Data custodian

Australian Institute of Health and Welfare


Accountability attributes

Reporting requirements:Help on this termNational Healthcare Agreement
Organisation responsible for providing data:Help on this termAustralian Institute of Health and Welfare
Further data development / collection required:Help on this termSpecification: Final, the measure meets the intention of the indicator.

Relational attributes

Related metadata references:Help on this term

See also National Health Performance Authority Healthy Communities: Percentage of live singleton births that were of low birthweight, 2007–2011 National Health Performance Authority (retired), Retired 01/07/2016

Supersedes National Healthcare Agreement: PI 01-Proportion of babies born of low birth weight, 2013 Health, Superseded 30/04/2014

Has been superseded by National Healthcare Agreement: PI 01-Proportion of babies born of low birth weight, 2015 Health, Superseded 08/07/2016

See also National Healthcare Agreement: PI 07-Infant and young child mortality rate, 2014 Health, Superseded 14/01/2015

See also National Indigenous Reform Agreement: PI 07-Proportion of babies born of low birth weight, 2015 Indigenous, Archived 18/11/2015

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