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National Core Maternity Indicators: PI 02-Antenatal care in the first trimester for all women giving birth (2013)

Identifying and definitional attributes

Metadata item type:Help on this termIndicator
Indicator type:Help on this termIndicator
Common name:Help on this termAntenatal care in the first trimester.
Short name:Help on this termPI 02-Antenatal care in the first trimester for all women giving birth (2013)
METeOR identifier:Help on this term557080
Registration status:Help on this termHealth, Superseded 02/02/2016
Description:Help on this termAmong all women who gave birth, the proportion who commenced antenatal care in the first trimester (before 14 completed weeks gestational age).
Rationale:Help on this termThis indicator is used to assess the accessibility of antenatal services.
Indicator set:Help on this termNational Core Maternity Indicators (2013) Health, Superseded 02/02/2016

Collection and usage attributes

Computation description:Help on this termThe proportion of all women who gave birth and who commenced antenatal care in the first trimester (before 14 completed weeks gestational age).
Computation:Help on this term100 × (Numerator ÷ Denominator)
Numerator:Help on this termThe number of women who gave birth and who had their first antenatal visit before 14 weeks gestation.
Numerator data elements:Help on this term
Data Element / Data SetPregnancy—estimated duration (at the first visit for antenatal care), completed weeks N[N]
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use
Data source type: Administrative by-product data
Data Element / Data SetBirth event—birth method, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use
Data source type: Administrative by-product data
Denominator:Help on this termThe total number of women who gave birth.
Denominator data elements:Help on this term
Data Element / Data SetBirth event—birth method, code N
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use
Data source type: Administrative by-product data
Disaggregation:Help on this term
  • Year of birth
  • State or territory of birth
  • Hospital annual number of births
  • Hospital sector
  • Remoteness category (from mother's area of usual residence)
  • Indigenous status of mother
  • Disadvantage quintile (from mother's area of usual residence)
Disaggregation data elements:Help on this term
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 SetEstablishment—organisation identifier (Australian), NNX[X]NNNNN
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 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—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—area of usual residence, geographical location code (ASGC 2010) NNNNN
Data Source
AIHW National Perinatal Data Collection (NPDC)
Guide for use
Data source type: Administrative by-product data
Comments:Help on this termData elements are from the Perinatal national minimum data set (NMDS) or have been provided as voluntary non-standardised items by the states and territories. Only records with a non-missing value have been included in the denominator.

Data for gestational age at first antenatal visit for the National Perinatal Data Collection have been collected since 2007, but were not provided for births in all states and territories, nor were data collection practices uniform. This indicator therefore uses data provided by NSW, SA and the NT from 2007. The ACT also provided data but has not agreed these are suitable quality for publication. Qld provided data for births from July 2009. Many hospitals in SA did not provide data in 2007, though over time the number of hospitals contributing data has increased. The indicator therefore uses only records with a non-missing value for the denominator. Standardised collection of data for gestation at first antenatal visit using the national standard data element Pregnancy—estimated duration (at the first visit for antenatal care), completed weeks N[N] commenced for births from July 2010.

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.

Gestational age is a clinical measure of the duration of the pregnancy. Gestational age at the time of the first antenatal visit is assessed from the best estimate of gestational age available.

An antenatal visit is an intentional encounter between a pregnant woman and a midwife or doctor prior to labour to assess and improve maternal and fetal wellbeing.

All women who gave birth are included for the calculation of this indicator.

This indicator has been developed for use by the Council of Australian Governments for monitoring the National Healthcare Agreement and the National Indigenous Reform Agreement.

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.N]

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


Relational attributes

Related metadata references:Help on this term

Has been superseded by National Core Maternity Indicators: PI 02—Antenatal care in the first trimester for all women giving birth (2016) Health, Superseded 06/09/2018

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