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National Healthcare Agreement: PI 01-Proportion of babies born of low birth weight, 2015

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, 2015
METEOR identifier:Help on this term559066
Registration status:Help on this term
  • Health, Superseded 08/07/2016
Description:Help on this termThe incidence of low birthweight among liveborn singleton babies.
Indicator set:Help on this termNational Healthcare Agreement (2015)
Health, Superseded 08/07/2016
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on this termNational Healthcare Agreement: PI 01-Proportion of babies born with low birth weight, 2015 QS Health, Superseded 08/07/2016

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 Socioeconomic 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:

CI (CR) = CR ± 1.96 x (CR/√d)

Where   d=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 Set

Birth—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 Set

Birth—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 Set

Birth 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

Denominator:Help on this termNumber of liveborn singleton infants.
Denominator data elements:Help on this term
Data Element / Data Set
Data Element / Data Set

Birth—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

Data Element / Data Set

Birth—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 Set

Birth 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

Disaggregation:Help on this term

2012—Nationally by:

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

2012—State and territory, by:

  • Indigenous status of the mother

2010–2012—State and territory, by:

  • Indigenous status of the mother

Disaggregation by Indigenous status of the mother 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 (2012) will be reported for time-series (state/territory by Indigenous status).

Disaggregation data elements:Help on this term
Data Element / Data Set

Person—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 Set

Person—area of usual residence, geographical location code (ASGC 2007) NNNNN

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. Geographic 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 2015 National Healthcare Agreement (NHA) performance reporting: 2012 (calendar year data).

Indigenous: Aggregated data (2010 to 2012) will be reported for the current reporting period (state and territory).

Single year data (2012) 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. 

For 2011 data, the 2011 SEIFA IRSD quintile and decile data were produced using the Australian Standard Geography Classification geographical unit of Statistical Local Area. For 2012 data, the 2011 SEIFA IRSD quintile and decile data will be produced using the Australian Statistical Geography Standard geographical unit of Statistical Area 2.

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 Source

AIHW 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.

Source and reference attributes

Relational attributes

Related metadata references:Help on this term
Supersedes National Healthcare Agreement: PI 01-Proportion of babies born of low birth weight, 2014
  • Health, Superseded 14/01/2015
Has been superseded by National Healthcare Agreement: PI 01–Proportion of babies born of low birth weight, 2016
  • Health, Superseded 31/01/2017
See also National Healthcare Agreement: PI 07-Infant and young child mortality rate, 2015
  • Health, Superseded 08/07/2016
See also National Indigenous Reform Agreement: PI 07—Proportion of babies born of low birthweight, 2016
  • Indigenous, Superseded 01/07/2016
See also National Indigenous Reform Agreement: PI 07—Proportion of babies born of low birthweight, 2017
  • Indigenous, Superseded 06/06/2017
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