National Core Maternity Indicators: PI 10—Small babies among births at or after 40 weeks gestation (2016)

Identifying and definitional attributes

Metadata item type:Indicator
Indicator type:Indicator
Common name:

Small babies among births at or after 40 weeks gestation.

Short name:PI 10—Small babies among births at or after 40 weeks gestation (2016)
METeOR identifier:613192
Registration status:Health, Superseded 06/09/2018
Description:

The proportion of babies born at or after 40 weeks gestation who weighed less than 2,750 grams at birth.

Rationale:

This indicator aims to identify intrauterine growth restriction for babies born at or after 40 weeks gestation. This indicator is used to benchmark practice.

Indicator set:National Core Maternity Indicators (2016) Health, Superseded 06/09/2018

Collection and usage attributes

Computation description:

The proportion of babies born at or after 40 weeks gestation who weighed less than 2,750 grams at birth.

Computation:

100 × (Numerator ÷ Denominator)

Numerator:

The number of babies born at or after 40 weeks gestation who weighed less than 2,750 grams at birth.

Numerator data elements:
Data Element / Data SetBirth—birth weight, total grams NNNN
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetProduct of conception—gestational age, completed weeks N[N]
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Denominator:

The number of babies born at or after 40 weeks gestation.

Denominator data elements:
Data Element / Data SetProduct of conception—gestational age, completed weeks N[N]
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Disaggregation:
  • Year of birth
  • State or territory of birth
  • Hospital annual number of births
  • Remoteness category (from mother's area of usual residence)
  • Disadvantage quintile (from mother's area of usual residence)
  • Indigenous status of mother
  • Sex of baby
Disaggregation data elements:
Data Element / Data SetBirth event—state/territory of birth, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetPerson—Indigenous status, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetPerson—date of birth, DDMMYYYY
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetPerson—sex, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetData Element

Hospital annual number of births


Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetPerson—area of usual residence, geographical location code (ASGC 2011) NNNNN
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use

Data source type: Administrative by-product data


Data Element / Data SetData Element

Hospital sector


Data Source
AIHW National Perinatal Data Collection (NPDC)
Comments:

Data elements are from the Perinatal national minimum data set (NMDS). Records with data that are missing, not stated or not interpretable have been excluded from the denominator.

 

A birth is defined as the event in which a baby comes out of the uterus after a pregnancy of at least 20 weeks gestation or weighing 400 grams or more. Births included are those for babies born at or after 40 weeks gestation. This includes stillborn babies and babies from a multiple birth.

Gestational age is reported as completed weeks.

Births excluded are those for babies born before 40 completed weeks gestational age, that is before 40 weeks and 0 (zero) days.

Modified from Australian Council on Healthcare Standards (ACHS) Indicator 8.1: Babies with severe intrauterine growth restriction. This ACHS indicator is based on the definition by Women's Healthcare Australasia (WHA) Core Maternity Indicators Project (CMIP).

Representational attributes

Representation class:Percentage
Data type:Real
Unit of measure:Person
Format:

N[NN.N]

Data source attributes

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

Australian Institute of Health and Welfare


Relational attributes

Related metadata references:

Supersedes National Core Maternity Indicators: PI 10-Small babies among births at or after 40 weeks gestation (2013) Health, Superseded 02/02/2016

Has been superseded by National Core Maternity Indicators: PI 10–Small babies among births at or after 40 weeks gestation, 2018 Health, Superseded 19/06/2019