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National Core Maternity Indicators: PI 02–Antenatal care visits in the first trimester for all females giving birth, 2020

Indicator Attributes

Identifying and definitional attributes

Metadata item type:Help on this termIndicator
Indicator type:Help on this termIndicator
Common name:Help on this term

Antenatal care visits in the first trimester

Short name:Help on this termPI 02–Antenatal care visits in the first trimester for all females giving birth, 2020
METEOR identifier:Help on this term728714
Registration status:Help on this term

Health, Superseded 17/12/2021

Description:Help on this term

Among all females who gave birth, the proportion who had their first antenatal care visits in the first trimester (before 14 weeks gestation).

Rationale:Help on this term

This indicator is used to assess the accessibility of antenatal services.

Indicator set:Help on this term
National Core Maternity Indicators, 2020

        Health, Superseded 17/12/2021

Collection and usage attributes

Computation description:Help on this term

The number of females who gave birth and who had their first antenatal care visit (before 14 weeks gestation), divided by the total number of females who gave birth with a stated first antenatal care visit, and multiplied by 100.

A birth is defined as the complete expulsion or extraction from a female, of a product of conception of 20 or more completed weeks of gestation or of 400 grams or more birthweight.

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

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

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

Computation:Help on this term

100 × (Numerator ÷ Denominator)

Numerator:Help on this term

The number of females who gave birth and who had their first antenatal care visit before 14 weeks gestation.

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

Birth event—birth method, code N

Data SourceHelp on this term

Perinatal National Minimum Data Set (NMDS)

NMDS / DSSHelp on this term

Perinatal NMDS 2014-18

Guide for useHelp on this term

Data source type: Administrative by-product data

Data Element / Data Set

Pregnancy—estimated duration (at the first visit for antenatal care), completed weeks N[N]

Data SourceHelp on this term

Perinatal National Minimum Data Set (NMDS)

NMDS / DSSHelp on this term

Perinatal NMDS 2014-18

Guide for useHelp on this term

Data source type: Administrative by-product data

Denominator:Help on this term

The total number of females who gave birth with a stated first antenatal care visit.

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

Birth event—birth method, code N

Data SourceHelp on this term

Perinatal National Minimum Data Set (NMDS)

NMDS / DSSHelp on this term

Perinatal NMDS 2014-18

Guide for useHelp on this term

Data source type: Administrative by-product data

Data Element / Data Set

Pregnancy—estimated duration (at the first visit for antenatal care), completed weeks N[N]

Data SourceHelp on this term

Perinatal National Minimum Data Set (NMDS)

NMDS / DSSHelp on this term

Perinatal NMDS 2014-18

Guide for useHelp on this term

 Data source type: Administrative by-product data

Disaggregation:Help on this term
  • Year of birth
  • State or territory of birth
  • Mother's age at 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)
  • Primary Health Network (from mother's area of usual residence)
  • Statistical local area 3 (from mother's area of usual residence)
Disaggregation data elements:Help on this term
Data Element / Data Set

Data ElementHelp on this term

 Hospital annual number of births

Data SourceHelp on this term

AIHW National Perinatal Data Collection (NPDC)

Guide for useHelp on this term

Data source type: Administrative by-product data

Data Element / Data Set

Data ElementHelp on this term

Hospital annual number of births

Data SourceHelp on this term

AIHW National Perinatal Data Collection (NPDC)

Guide for useHelp on this term

Data source type: Administrative by-product data

Data Element / Data Set

Data ElementHelp on this term

Hospital sector

Data SourceHelp on this term

AIHW National Perinatal Data Collection (NPDC)

Guide for useHelp on this term

Data source type: Administrative by-product data

Data Element / Data Set

Person—date of birth, DDMMYYYY

Data SourceHelp on this term

Perinatal National Minimum Data Set (NMDS)

NMDS / DSSHelp on this term

Perinatal NMDS 2014-18

Guide for useHelp on this term

Data source type: Administrative by-product data

Data Element / Data Set

Person—Indigenous status, code N

Data SourceHelp on this term

Perinatal National Minimum Data Set (NMDS)

NMDS / DSSHelp on this term

Perinatal NMDS 2014-18

Guide for useHelp on this term

Data source type: Administrative by-product data

Data Element / Data Set

Person—area of usual residence, statistical area level 2 (SA2) code (ASGS 2016) N(9)

Data SourceHelp on this term

Perinatal National Minimum Data Set (NMDS)

NMDS / DSSHelp on this term

Perinatal NMDS 2014-18

Guide for useHelp on this term

Data source type: Administrative by-product data

Comments:Help on this term

Data elements are from the Perinatal National Minimum Data Set (NMDS) or have been provided as voluntary non-standardised items by the states and territories. Records with a permissible value have been included in the denominator.

Data for gestational age at first antenatal care visit for the National Perinatal Data Collection (NPDC) have been collected since 2007, but were not provided for births in all states and territories, nor were data collection practices uniform. Data was provided by New South Wales, South Australia and the Northern Territory from 2007. The Australian Capital Territory also provided data but has not agreed these are of a suitable quality for publication. Queensland provided data for births from July 2009. Many hospitals in South Australia 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 permissible value for the denominator. Standardised collection of data for gestational age at first antenatal care 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. In addition, there was a documented change in collection practice in New South Wales in 2011, from 'Duration of pregnancy at first antenatal visit' to 'Duration of pregnancy at first comprehensive booking or assessment by clinician' (HealthStat NSW 2016). As a result, this indicator will be published from 2011 onwards, where all states and territories provided data for this indicator.

This indicator has been developed for use by the Council of Australian Governments (CoAG) for monitoring the National Indigenous Reform Agreement (NIRA).

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 term

N[NN.N]

Data source attributes

Data sources:Help on this term
Data Source

Perinatal National Minimum Data Set (NMDS)

Frequency

Annual

Data custodian

Australian Institute of Health and Welfare

Data Source

AIHW National Perinatal Data Collection (NPDC)

Frequency

Calendar years ending 31 December each year

Data custodian

Australian Institute of Health and Welfare

Source and reference attributes

Submitting organisation:Help on this term

Australian Institute of Health and Welfare

Reference documents:Help on this term

HealthStat NSW 2016. Antenatal care by gestational age. Viewed 23 March 2016, www.healthstats.nsw.gov.au/indicator/mum_antegage/mum_antegage_lhn_snap.

WHA (Women's Healthcare Australasia) 2007. Supporting excellence in maternity care: the core maternity indicators project: findings from the core maternity indicators project. Canberra: WHA.

Relational attributes Help on this term

Related metadata references:Help on this term
Supersedes National Core Maternity Indicators: PI 02–Antenatal care visits in the first trimester for all females giving birth, 2019

        Health, Superseded 16/09/2020

Has been superseded by National Core Maternity Indicators: PI 02–Antenatal care visits in the first trimester for all females giving birth, 2021

        Health, Superseded 09/09/2022

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